De Groote, P
Tran, H T
Fransen, M
Tanghe, G
Urwyler, C
De Craene, B
Leurs, K
Gilbert, B
Van Imschoot, G
De Rycke, R
Guérin, C J
Holland, P
Berx, G
Vandenabeele, P
Lippens, S
Vleminckx, K
Declercq, W
Article History
Received: 31 May 2013
Revised: 21 October 2014
Accepted: 22 October 2014
First Online: 28 November 2014
Competing interests
: The authors declare no conflict of interest.