1. Department of Internal Medicine; Hospital Sant Joan de Deu de Martorell, Mancomunitats Comarcals Avenue 1-3, Martorell; 08760 Barcelona Spain
2. Department of Medicine; Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129; 08035 Barcelona Spain
3. Endocrinology and Nutrition Department; Hospital del Mar Barcelona, Passeig Marítim 25-29; 08003 Barcelona Spain
4. Obstetrics and Gynaecology Department; Hospital del Mar Barcelona, Passeig Marítim 25-29; 08003 Barcelona Spain