Carpaij, O. A.
Muntinghe, F. O. W.
Wagenaar, M. B.
Habing, J. W.
Timens, W.
Kerstjens, H. A. M.
Nawijn, M. C.
Kunz, L. I. Z.
Hiemstra, P. S.
Tew, G. W.
Holweg, C. T. J.
Brandsma, C. A.
van den Berge, M.
Article History
Received: 25 April 2018
Accepted: 30 May 2018
First Online: 7 June 2018
Ethics approval and consent to participate
: The local ethics committee (METc University Medical Center Groningen) approved both study protocols and all subjects gave written informed consent.
: The authors declare that they have no competing interests.
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