1. Department of Obstetrics & Gynecology, College of Medicine; Pontificia Universidad Católica de Chile; Alameda 340 Santiago Chile
2. Department of Nutrition, College of Medicine; Pontificia Universidad Católica de Chile; Alameda 340 Santiago Chile
3. Department of Gastroenterology, College of Medicine; Pontificia Universidad Católica de Chile; Alameda 340 Santiago Chile
4. Department of Respiratory Diseases, College of Medicine; Pontificia Universidad Católica de Chile; Alameda 340 Santiago Chile
5. College of Medicine, Universidad Católica del Norte; Avda Angamos 0610 Antofagasta Chile