An epidemiological survey of hepatitis B surface antigen and antibody among middle aged employees of Japan National Railways
国鉄中高年齢者におけるHBs抗原,抗体の疫学的観察

Koshi SAKUMA, Yutaka MAEDA, Tatsuya KIUCHI, Hachiro OHTAKE, Makoto MAYUMI, Kunio OKUDA
1976 Kanzo  
doi:10.2957/kanzo.17.361 fatcat:omsdn7g4ffbszo3irkkm6ll5mq