[1] Radboud Univ Nijmegen, Med Ctr, Dept Internal Med, NL-6525 ED Nijmegen, Netherlands
[2] Tjongerschans Hosp, Dept Cardiol, Heerenveen, Netherlands
[3] Leiden Univ, Dept Endocrinol, Med Ctr, Leiden, Netherlands
[4] Leiden Univ, Dept Nephrol, Med Ctr, Leiden, Netherlands
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Internal Med, NL-9713 AV Groningen, Netherlands
[6] Isala Clin, Dept Internal Med, Zwolle, Netherlands