Bibian van der Voorn

31 AIM, DESIGN AND OUTLINE OF THIS THESIS REFERENCES 1 Perined. Perinatale Zorg in Nederland 2015. (Utrecht, 2016). 2 NCHS. Infant deaths due to prematurity/low birthweight: US, 2003-2013. (http://www.marchofdimes.org/ Peristats/, 2017). 3 Noppe, G., de Rijke, Y. B., Dorst, K., van den Akker, E. L. & van Rossum, E. F. LC-MS/MS-based method for long-term steroid profiling in human scalp hair. Clin Endocrinol (Oxf) 83 , 162-166 (2015). 4 Liu, C. H., Snidman, N., Leonard, A., Meyer, J. & Tronick, E. Intra-individual stability and developmental change in hair cortisol among postpartum mothers and infants: Implications for understanding chronic stress. Dev Psychobiol 58 , 509-518 (2016). 5 Flom, M., St John, A. M., Meyer, J. S. & Tarullo, A. R. Infant hair cortisol: associations with salivary cortisol and environmental context. Dev Psychobiol 59 , 26-38 (2017). 6 Challis, J., Newnham, J., Petraglia, F., Yeganegi, M. & Bocking, A. Fetal sex and preterm birth. Placenta 34 , 95-99 (2013). 7 Peacock, J. L., Marston, L., Marlow, N., Calvert, S. A. & Greenough, A. Neonatal and infant outcome in boys and girls born very prematurely. Pediatr Res 71 , 305-310 (2012). 8 Stevenson, D. K. et al. Sex differences in outcomes of very low birthweight infants: the newborn male disadvantage. Arch Dis Child Fetal Neonatal Ed 83 , F182-185 (2000). 9 Hintz, S. R. et al. Gender differences in neurodevelopmental outcomes among extremely preterm, extremely-low- birthweight infants. Acta Paediatr 95 , 1239-1248, (2006).