Peneda, Jorge, Aidil Fonseca, Cristina Ribeiro, Teresa Sá Nogueira, Mª Celeste Dias, Soledade Gomes, and Domingos Neto. 1998. “The Abstinence in Alcoholism. The Changes in Carbohydrate-Deficient Transferrin (CDT)”. Internal Medicine 5 (4). Lisboa, Portugal:224-31. https://revista.spmi.pt/index.php/rpmi/article/view/2155.