Affiliation: | 1. Department of Surgery, Hospital Nacional Daniel Alcides Carrión, Av. Guardia Chalaca 2176, Bellavista, 07016, Callao, Peru;2. Universidad Nacional Mayor de San Marcos, Av. Grau Block 7, 15001, Lima, Peru;3. Universidad San Martin de Porres, Alameda del Corregidor 1531, La Molina, 15024, Lima, Peru |