Epidemiological Study on Subtype of HBs-Ag and Anti-HBs - MATSUNO, Katashi; SEKINE, Teruaki; NISHIOKA, Kusuya; MAEDA, Atsushi; YAMAUCHI, Daizo; YAMASHITA, Katsuko; UECHI, Mutsuo; FUJIWARA, Sumie; TAKEMOTO, Tadayoshi; MOTOIKE, Yoji; YOKOYAMA, Izumi; ICHIOKA, Shisho; et al. (Kanzo, 1976)