World's Best Scientists 2026 revealed!
Award Badge
Medicine
Sweden
2023

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 130 2496 2325 48 45 746 62787

Per Ljungman publications per year

The chart shows the history of publications by Per Ljungman between 1984 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Per Ljungman published across 42 years, from 1984 to 2025, averaging 19 papers a year. Output peaked at 38 publications in 2019. 40 of the 800 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1984 to 2025. Vertical axis: number of publications, 0 to 38. Peak 38 publications in 2019. 1984: 3 publications 1985: 6 publications 1986: 7 publications 1987: 3 publications 1988: 1 publication 1989: 5 publications 1990: 5 publications 1991: 8 publications 1992: 12 publications 1993: 16 publications 1994: 20 publications 1995: 26 publications 1996: 27 publications 1997: 13 publications 1998: 24 publications 1999: 24 publications 2000: 16 publications 2001: 16 publications 2002: 23 publications 2003: 8 publications 2004: 22 publications 2005: 10 publications 2006: 18 publications 2007: 15 publications 2008: 20 publications 2009: 22 publications 2010: 19 publications 2011: 20 publications 2012: 20 publications 2013: 28 publications 2014: 24 publications 2015: 28 publications 2016: 30 publications 2017: 32 publications 2018: 36 publications 2019: 38 publications 2020: 26 publications 2021: 36 publications 2022: 22 publications 2023: 31 publications 2024: 21 publications 2025: 19 publications
1984 2025

800 publications in total across all disciplines

View publications per year as a table
Per Ljungman: publications per year, 1984 to 2025
Year Publications
1984 3
1985 6
1986 7
1987 3
1988 1
1989 5
1990 5
1991 8
1992 12
1993 16
1994 20
1995 26
1996 27
1997 13
1998 24
1999 24
2000 16
2001 16
2002 23
2003 8
2004 22
2005 10
2006 18
2007 15
2008 20
2009 22
2010 19
2011 20
2012 20
2013 28
2014 24
2015 28
2016 30
2017 32
2018 36
2019 38
2020 26
2021 36
2022 22
2023 31
2024 21
2025 19
Total 800
Download as CSV

Per Ljungman publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Per Ljungman sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 741–760 publications, is where this scientist sits. 101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101–120 publications 1,796+

This scientist: 746 publications — 84th percentile

84% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230 746
761–780 228
781–800 217
801–820 204
821–840 186
841–860 177
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
Download as CSV

Per Ljungman D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Per Ljungman sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 130–131 D-Index, is where this scientist sits. 70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70–71 D-Index 217+

This scientist: 130 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972
82–83 1,027
84–85 1,003
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255
124–125 256
126–127 252
128–129 230
130–131 179 130
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
Download as CSV

Research.com Recognitions

  • 2023 - Research.com Medicine in Sweden Leader Award

Overview

Per Ljungman is affiliated with Karolinska University Hospital in Sweden and has an extensive research portfolio focused primarily on medicine, with particular attention to infectious diseases, hematology, oncology, epidemiology, and immunology. Their work spans a large number of publications centered on hematopoietic stem cell transplantation and related complications, infectious disease outcomes, and clinical impacts of COVID-19.

The researcher has contributed to several recent papers, including:

  • COVID-19 and stem cell transplantation; results from an EBMT and GETH multicenter prospective survey (2021, Leukemia)
  • The challenge of COVID-19 and hematopoietic cell transplantation; EBMT recommendations for management of hematopoietic cell transplant recipients, their donors, and patients undergoing CAR T-cell therapy (2020, Bone Marrow Transplantation)

Per Ljungman often collaborates with other researchers who frequently co-author their work. Key collaborators include Rafael de la Cámara, Małgorzata Mikulska, Jan Styczyński, Simone Cesaro, and Gloria Tridello.

Their publications are frequently found in several specialized venues, including:

  • Bone Marrow Transplantation
  • Blood
  • Leukemia
  • Frontiers in Immunology
  • Clinical Infectious Diseases

The main topics explored in Per Ljungman's research involve hematopoietic stem cell transplantation, COVID-19 clinical research studies, cytomegalovirus and herpesvirus research, SARS-CoV-2 and COVID-19 research, CAR-T cell therapy research, herpesvirus infections and treatments, and the healthcare impacts of COVID-19.

Their prominent subfields include infectious diseases, hematology, oncology, epidemiology, and immunology, highlighting a multidisciplinary approach to understanding and managing complex clinical scenarios related to transplantation and infectious complications.

Best Publications

  • 2013 IDSA Clinical Practice Guideline for Vaccination of the Immunocompromised Host

    Lorry G. Rubin;Myron J. Levin;Per Ljungman;E. Graham Davies

  • Definitions of Cytomegalovirus Infection and Disease in Transplant Recipients

    Per Ljungman;Paul Griffiths;Carlos Paya

  • Letermovir Prophylaxis for Cytomegalovirus in Hematopoietic-Cell Transplantation

    Francisco M Marty;Per Ljungman;Roy F Chemaly;Johan Maertens

  • Executive Summary: 2013 IDSA Clinical Practice Guideline for Vaccination of the Immunocompromised Host

    Lorry G. Rubin;Myron J. Levin;Per Ljungman;Per Ljungman;E. Graham Davies

  • Definitions of Cytomegalovirus Infection and Disease in Transplant Patients for Use in Clinical Trials.

    Per Ljungman;Per Ljungman;Michael Boeckh;Michael Boeckh;Hans H Hirsch;Filip Josephson

  • Cytomegalovirus in Hematopoietic Stem Cell Transplant Recipients

    Per Ljungman;Morgan Hakki;Michael Boeckh;Michael Boeckh

  • How we treat cytomegalovirus in hematopoietic cell transplant recipients

    Michael Boeckh;Per Ljungman

  • Malignant tumors occurring after treatment of aplastic anemia. European Bone Marrow Transplantation-Severe Aplastic Anaemia Working Party.

    Socié G;Henry-Amar M;Bacigalupo A;Hows J

  • Transplantation of mesenchymal stem cells to enhance engraftment of hematopoietic stem cells.

    K. Le Blanc;H. Samuelsson;B. Gustafsson;M. Remberger

  • NK cell responses to cytomegalovirus infection lead to stable imprints in the human KIR repertoire and involve activating KIRS

    Vivien Béziat;Lisa L. Liu;Jenny-Ann Malmberg;Martin A. Ivarsson

  • Allogeneic bone marrow transplantation versus autologous stem cell transplantation in multiple myeloma: a retrospective case-matched study from the European Group for Blood and Marrow Transplantation

    BB Bjorkstrand;P Ljungman;H Svensson;J Hermans

  • Allogeneic and autologous transplantation for haematological diseases, solid tumours and immune disorders: current practice in Europe 2009.

    P. Ljungman;M. Bregni;M. Brune;J. Cornelissen

  • A Randomized Trial Comparing Busulfan With Total Body Irradiation as Conditioning in Allogeneic Marrow Transplant Recipients With Leukemia: A Report From the Nordic Bone Marrow Transplantation Group

    O Ringden;T Ruutu;M Remberger;J Nikoskelainen

  • Epstein-Barr virus (EBV) load in bone marrow transplant recipients at risk to develop posttransplant lymphoproliferative disease: prophylactic infusion of EBV-specific cytotoxic T cells.

    Åsa Gustafsson;Victor Levitsky;Jie Zhi Zou;Teresa Frisan

  • Progress in allogenic bone marrow and peripheral blood stem cell transplantation for multiple myeloma: a comparison between transplants performed 1983--93 and 1994--8 at European Group for Blood and Marrow Transplantation centres.

    G. Gahrton;H. Svensson;M. Cavo;J. Apperley

  • Transfusion of pooled buffy coat platelet components prepared with photochemical pathogen inactivation treatment: the euroSPRITE trial

    Dick van Rhenen;Hans Gulliksson;Jean-Pierre Cazenave;Derwood Pamphilon

  • Management of HSV, VZV and EBV infections in patients with hematological malignancies and after SCT: guidelines from the Second European Conference on Infections in Leukemia.

    J Styczynski;P Reusser;H Einsele;R de la Camara

  • Allogeneic bone marrow transplantation in multiple myeloma

    G Gahrton;S Tura;P Ljungman;C Belanger

  • Randomized multicenter trial of foscarnet versus ganciclovir for preemptive therapy of cytomegalovirus infection after allogeneic stem cell transplantation

    Pierre Reusser;Hermann Einsele;John Lee;Liisa Volin

  • Prognostic factors in allogeneic bone marrow transplantation for multiple myeloma

    G Gahrton;S Tura;P Ljungman;J Bladé

Frequent Co-Authors

Olle Ringdén
Olle Ringdén Karolinska Institute
Catherine Cordonnier
Catherine Cordonnier Paris-Est Créteil University
Gérard Socié
Gérard Socié Université Paris Cité
Dietger Niederwieser
Dietger Niederwieser Leipzig University
Arnon Nagler
Arnon Nagler Sheba Medical Center
Jakob Passweg
Jakob Passweg University Hospital of Basel
Nicolaus Kröger
Nicolaus Kröger Universität Hamburg
Myriam Labopin
Myriam Labopin Université Paris Cité

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For those interested in expanding their medical and healthcare careers in the USA, a wide range of online degree programs are now available. Choosing a program with the right accreditation is crucial for advancing in the healthcare field. It is important to consider which online healthcare degree programs are recognized for their accreditation by cahme? as these credentials can have a direct impact on employment and advancement opportunities.

If you are already a registered nurse seeking to earn a Bachelor of Science in Nursing, there are best online rn to bsn programs without clinical requirements that offer a flexible pathway to continue your education without hands-on clinical components. For those aiming for advanced practice or leadership positions, consider exploring accelerated dnp programs to complete your Doctor of Nursing Practice in less time.

Cost can also be a major concern for many students. Fortunately, there are options for the cheapest dnp program, allowing you to pursue advanced nursing education without accumulating significant debt. Online pathways make it easier than ever to balance work, study, and personal commitments while advancing your healthcare career.

Best Scientists Citing Per Ljungman

Trending Scientists

Recently Published Articles