[1] Lisbons Fac Med, Ctr Metab & Endocrinol, Genet Lab, Lisbon, Portugal
[2] CEDML Clin Endocrinol Diabet & Metab Lisboa Lda, Osteoporosis Unit, Lisbon, Portugal
[3] Santa Maria Univ Hosp, CHLN EPE, Dept Diabet Endocrinol & Metab, Lisbon, Portugal
[4] FCMUNL, Dept Biostat, Lisbon, Portugal
[5] Univ Lausanne Hosp, Ctr Bone Dis, Lausanne, Switzerland