de Almeida, António Mendes, Caetano Winston Gracias, Noel Medina dos Santos, and Fernando Aldeia. 1981. “Choledocholithiasis -a Plea for Biliary Fenestration”. Acta Médica Portuguesa 3 (2). Lisbon, Portugal:113-24. https://doi.org/10.20344/amp.3878.