The chart shows the distribution of publications by all Research.com ranked scientists in the field of Immunology in 2026. The highlighted bar marks where Hiroaki Okamoto sits on this spectrum.
This scientist: 709 publications — 96th percentile
96% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 807 publications or more.
The chart shows the D-index (discipline H-index) distribution of Immunology scientists ranked by Research.com in 2026. The highlighted bar marks where Hiroaki Okamoto sits on this spectrum.
This scientist: 120 D-Index — 93rd percentile
93% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 157 D-Index or more.
Hiroaki Okamoto is affiliated with Jichi Medical University in Japan and has contributed extensively to the field of medicine, with a primary focus on hepatology. Their research spans several subfields including hepatology, cardiology and cardiovascular medicine, infectious diseases, epidemiology, and pulmonary and respiratory medicine.
The scientist's work covers a variety of key topics within medical research such as hepatitis viruses studies and epidemiology, viral gastroenteritis research and epidemiology, liver disease and transplantation, hepatitis C virus research, hepatitis B virus studies, liver disease diagnosis and treatment, and sepsis diagnosis and treatment.
Frequent publication venues for Hiroaki Okamoto include the following journals:
Some recent papers featuring their work are:
Hiroaki Okamoto has collaborated frequently with a group of researchers including Masaharu Takahashi, Shigeo Nagashima, Kazumoto Murata, Putu Prathiwi Primadharsini, and Tatsuo Kanda. These collaborations have contributed to a significant body of work in their respective fields.
Peter Simmonds;Jens Bukh;Christophe Combet;Gilbert Deléage
Tsutomu Nishizawa;Hiroaki Okamoto;Keiko Konishi;Hiroshi Yoshizawa
Hiroaki Okamoto;Fumio Tsuda;Hiroshi Sakugawa;Retno I. Sastrosoewignjo
Hiroaki Okamoto;Yasushi Sugiyama;Shunichi Okada;Kiyohiko Kurai
Hiroaki Okamoto;Tsutomu Nishizawa;Naomi Kato;Masato Ukita
Hiroaki Okamoto;Kiyohiko Kurai;Shun-Ichi Okada;Kayoko Yamamoto
Yasuyuki Yazaki;Hitoshi Mizuo;Masaharu Takahashi;Tsutomu Nishizawa
H Okamoto;S Okada;Y Sugiyama;T Tanaka
Donald B. Smith;Peter Simmonds;Shahid Jameel
H Okamoto;F Tsuda;Y Akahane;Y Sugai
Okamoto H;Okada S;Sugiyama Y;Yotsumoto S
M. Yoshiba;H. Okamoto;S. Mishiro
H Okamoto;S Yotsumoto;Y Akahane;T Yamanaka
Hiroaki Okamoto;Hajime Tokita;Minoru Sakamoto;Minoru Horikita
Hiroaki Okamoto;Shunichi Okada;Yasushi Sugiyama;Kiyohiko Kurai
Takehiro Mitsui;Keiko Iwano;Kazuo Masuko;Chikao Yamazaki
Kazuo Masuko;Takehiro Mitsui;Keiko Iwano;Chikao Yamazaki
Hiroaki Okamoto;Maki Kojima;Shun-Ichi Okada;Hiroshi Yoshizawa
Hiroaki Okamoto;Yoshihiro Akahane;Masato Ukita;Masako Fukuda
Shunichi Sato;Kazuyuki Suzuki;Yoshihiro Akahane;Koichi Akamatsu
Hitoshi Ohto;Sousuke Terazawa;Nobuhiko Sasaki;Nobutaka Sasaki
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