1. Department of Endocrinology and Internal Medicine Municipal Foundation for Women and Children (Fundación Municipal de la Mujer y el Niño – FMMN) Cuenca Ecuador
2. Department of Endocrinology Salvador Zubiran National Institute of Health Sciences and Nutrition (Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran – INCMNSZ) Mexico City Mexico
3. Department of Internal Medicine Loja Central Day Hospital Outpatient Surgical Clinical Center (Centro Clinico Quirúrgico Ambulatorio Hospital del Dial Central Loja‐ CCQAHDCL), Loja, Ecuador. Cuenca Ecuador
4. Deparment of Genetics. Rio Hospital (Hospital del Rio) Loja Ecuador