Biliary microlithiasis: a cause of idiopathic pancreatitis in childhood.

*Division of Pediatric Surgery, Unitat Integrada Hospital Clínic, Hospital Sant Joan de Deu, Universitat de Barcelona, Barcelona, Spain; †Division of Pediatric Surgery, São João Hospital, Porto, Portugal; ‡Division of Pediatrics, Unitat Integrada Hospital Clínic, Hospital Sant Joan de Deu, Universitat de Barcelona, Barcelona, Spain; and §Institut de Malalties Digestivas, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain