[1
]
Department of Public Health and Primary Care, University of Cambridge, Cambridge,
United Kingdom; School of Clinical Sciences, University of Bristol, Bristol, United
Kingdom. Electronic address: skk31@cantab.net.
[2
]
Department of Internal Medicine, University of Groningen and University Medical Center,
Groningen, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands.
[3
]
Department of Clinical Chemistry, University of Groningen and University Medical Center,
Groningen, The Netherlands.
[4
]
Department of Internal Medicine, University of Groningen and University Medical Center,
Groningen, The Netherlands.
[5
]
Department of Endocrinology, University of Groningen and University Medical Center,
Groningen, The Netherlands.