1. Healthcare Research Group (GRECS); Institute of Biomedical Research in Lleida (IRBLleida); Lleida Spain
2. GESEC group, Department of Nursing and Physiotherapy, Faculty of Nursing and Physiotherapy; University of Lleida; Lleida Spain
3. Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau); CIBER Epidemiología y Salud Pública (CIBERESP); Barcelona Spain
4. Endocrinology Section, Department of Medicine; Hospital General de Granollers; Granollers Spain
5. Department of Medicine; Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya; Sant Cugat del Vallés Spain
6. Department of Endocrinology and Nutrition; Hospital Universitari Arnau de Vilanova, Institut de Recerca Biomèdica de Lleida (IRBLLEIDA); Lleida Spain
7. Institute of General Practice; Medical Faculty of the Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
8. CIBER of Diabetes and Associated Metabolic Disease; Barcelona Spain
9. Department of Endocrinology and Nutrition; Hospital de la Santa Creu i Sant Pau; Barcelona Spain
10. Department of Medicine; Faculty of Medicine, University of Vic & Central University of Catalonia; Vic Spain