1. Laboratory of Functional Morphology, Biology, University of Antwerp , Universiteitsplein 1, 2610 Wilrijk , Belgium
2. Movement and Sports Sciences, University of Ghent , Watersportlaan 2 , Belgium
3. Laboratory of Comparative Perinatal development, Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Wilrijk , Belgium