M. Alcala de Monzon

Epidemiology and long-term consequences of hepatitis delta virus infection in the Yucpa Indians of Venezuela.

S. Hadler, H. Fields, M. Pérez, 1992, American journal of epidemiology.

Epidemiology of hepatitis delta virus infection in less developed countries.

S. Hadler, H. Fields, M. Martínez Duran, 1991, Progress in clinical and biological research.