1. Department of Obstetrics and Gynecology, Hospital Nacional Edgardo Rebagliati Martins, Lima, Peru
2. Department of Endocrinology, Hospital Nacional Guillermo Almenara Irigoyen, Lima, Peru
3. Department of Endocrinology, Hospital Nacional Daniel Alcides Carrion, Lima, Peru
4. Department of Medicine, Universidad Privada Antenor Orrego, Trujillo, Peru
5. Department of Pulmonology, Hospital Regional Docente de Trujillo, Universidad Nacional de Trujillo, Trujillo, Peru
6. Department of Neonatology, Hospital Belen de Trujillo, Universidad Privada Antenor Orrego, Trujillo, Peru