Cid, A.; Jubin, J. A.; Vesperoni, H.; Verderosa, W.; Rodrigo, C.; Arismendi, A.; Medina, M. The Postoperatory of Abdominal Surgery: Retrospective Analysis. Risk Factors. Evaluation of Therapy and Prognosis. Cir. Urug. 1979, 49, 484-489.