Quynh Thi Vu, Ko Harada, Yoshito Nishimura, Hideharu Hagiya, Elizabeth Tan, Odifentse Mapula E Lehasa, Yoshito Zamami, Toshihiro Koyama. Burden of depressive disorders in Vietnam from 1990 to 2019: A secondary analysis of the Global Burden of Disease Study 2019. Journal of psychiatric research. 2024. 172. 420-426
Masashi Shibata, Yuki Otsuka, Hideharu Hagiya, Toshihiro Koyama, Hideyuki Kashiwagi, Fumio Otsuka. Changes in the place of death before and during the COVID-19 pandemic in Japan. PloS one. 2024. 19. 2. e0299700
Shintaro Fujiwara, Ko Harada, Hideharu Hagiya, Toshihiro Koyama, Kosei Hasegawa, Hirokazu Tsukahara, Fumio Otsuka. Trends in childhood obesity in Japan: A nationwide observational study from 2012 to 2021. (in press). Clinical Obesity. 2023
Akazawa H, Hagiya H, Koyama T, Otsuka F. Trends in the Incidence of Disseminated Cryptococcosis in Japan: A Nationwide Observational study, 2015-2021 (in press). Mycopathologia. 2023
Koyama T, Iinuma S, Yamamoto M, Niimura T, Osaki Y, Nishimura S, Harada K, Zamami Y, Hagiya H. International trends in adverse drug event-related mortality from 2001 to 2019: An analysis of the World Health Organization Mortality Database from 54 countries. (in press). Drug Safety. 2023