CFTR, PRSS1 and SPINK1 mutations in the development of pancreatitis in brazilian patients - Bernardino, Andréa Liliane Ferreira; Guarita, Dulce Reis; Mott, Carlos de Barros; Pedroso, Martha Regina Arcon; Machado, Marcel Cerqueira César; Laudanna, Antônio Atílio; Tani, Claudia Megume; Almeida, Fatima Lovatti; Zatz, Mayana (Journal of the Pancreas, 2003)