1 Department of Medicine Division of Endocrinology Department of Clinical Epidemiology Leiden University Medical Center, Leiden, Netherlands Department of Clinical Epidemiology Aarhus University Hospital, Aarhus, Denmark Department of Endocrinology Skane University Hospital, Malmö, Sweden Department of Medicine Division of Endocrinology Department of Clinical Epidemiology Leiden University Medical Center, Leiden, Netherlands Department of Clinical Epidemiology Aarhus University Hospital, Aarhus, Denmark Department of Endocrinology Skane University Hospital, Malmö, Sweden Department of Medicine Division of Endocrinology Department of Clinical Epidemiology Leiden University Medical Center, Leiden, Netherlands Department of Clinical Epidemiology Aarhus University Hospital, Aarhus, Denmark Department of Endocrinology Skane University Hospital, Malmö, Sweden o.m.dekkers@lumc.nl.
2 Department of Medicine Division of Endocrinology Department of Clinical Epidemiology Leiden University Medical Center, Leiden, Netherlands Department of Clinical Epidemiology Aarhus University Hospital, Aarhus, Denmark Department of Endocrinology Skane University Hospital, Malmö, Sweden.