![Seroepidemiological investigation of patients and family contacts in an epidemic of hepatitis A]()
Seroepidemiological investigation of patients and family contacts in an epidemic of hepatitis AGert G. Frösner; Lacy R. Overby; Bertram Flehmig; Hans-Joachim Gerth; Hans Haas; Richard H. Decker; Chung-Mei Ling; Arie J. Zuckerman; P.-D. Dr. Helga-Ruth Frösner · 1977