1. Endocrine Service, Hospital de Pediatría Garrahan, Combate de los Pozos 1881(C 1245 AAM) C.A.B.A., Buenos Aires, Argentina
2. Department of Biomedical Informatics, University of Pittsburgh Cancer Institute, 5607 Baum Boulevard, Suite 500, Pittsburgh, PA, USA
3. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine and Magee-Womens Research Institute, 204 Craft Avenue, Pittsburgh, PA, USA