1. Department of Endocrinology and Nutrition; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona; Barcelona; Spain
2. Hormone and Biochemical Laboratory; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona; Barcelona; Spain
3. Agència de Salut Pública; Generalitat de Catalunya; Badalona; Barcelona; Spain
4. Department of Internal Medicine; Department of Medicine; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona; Barcelona; Spain