Abstract
Ferri, V; Lopez, EV; Collazo, YQ; Caruso, R; Rico, HDG; Ielpo, B; Reques, ED; Cabrera, IF; Cardozo, LM; Isernia, R; Pinna, E; Hernandezv, CP; Garcerant, M; Canamaques, LG; Duenas, VP
Ferri, V (reprint author), San Pablo Univ, Sanchinarro Hosp, Div Gen Surg, Calle Ona 10, Madrid 28050, Spain.
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