Affiliation: | 1. Department of Obstetrics and Gynecology, Hospital das Clínicas, São Paulo University Medical School, São Paulo, SP, Brazil;2. Department of Pediatric Surgery, Hospital das Clínicas, São Paulo University Medical School, São Paulo, SP, Brazil;3. Department of Pediatrics, Hospital das Clínicas, São Paulo University Medical School, São Paulo, SP, Brazil;4. Department of Pathology, Hospital das Clínicas, São Paulo University Medical School, São Paulo, SP, Brazil |