M. Echeverría

Argentina's WHO Cancer Pain Relief Program: a patient care model.

J. Ocariz, M. Clerici, R. Wenk, 1991, Journal of pain and symptom management.

Gastrointestinal and hepatobiliary manifestations in patients with common variable immunodeficiency: In relation to three clinical cases

J. Brahm, J. Poniachik, C. Romero, 2019, Gastroenterología y Hepatología (English Edition).