Cheung , Y.B., K. Albertsson-Wikland , Z.C. Luo , et al. "Benn Index at Birth is Associated with Postnatal Linear Growth" Journal of Pediatric Endocrinology and Metabolism, 15.8 (2011): 1161-1166. Retrieved 20 May. 2013, from doi:10.1515/JPEM.2002.15.8.1161

Cheung , Y., Albertsson-Wikland , K., Luo , Z., et al. (2011). Benn Index at Birth is Associated with Postnatal Linear Growth. Journal of Pediatric Endocrinology and Metabolism, 15(8), pp. 1099-1216. Retrieved 20 May. 2013, from doi:10.1515/JPEM.2002.15.8.1161

Cheung , Y.B., K. Albertsson-Wikland , Z.C. Luo , et al. 2011. Benn Index at Birth is Associated with Postnatal Linear Growth. Journal of Pediatric Endocrinology and Metabolism. 15(8): 1099-1216. Retrieved 20 May. 2013, from doi:10.1515/JPEM.2002.15.8.1161