Alteration of serum and urinary bile acid sulfates in intrahepatic cholestasis - AMAKASU, Hitoshi; MIYAKAWA, Takatoshi; SUZUKI, Hiroshi; OTA, Shinichi; NAGAKURA, Takatomo; ISHII, Motoyasu; OTSUKI, Masao; GOTO, Yoshio (Kanzo, 1987)