Opondo, C., Jayaweera, H., Hollowell, J., Li, Y., Kurinczuk, J., & Quigley, M. (2020). Variations in neonatal mortality, infant mortality, preterm birth and birthweight in England and Wales according to maternal country or region of birth: An analysis of linked national data from 2006 to 2012. BMJ Publishing Group.
Chicago-referens (17:e uppl.)Opondo, C., H. Jayaweera, J. Hollowell, Y. Li, J. Kurinczuk, och M. Quigley. Variations in Neonatal Mortality, Infant Mortality, Preterm Birth and Birthweight in England and Wales According to Maternal Country or Region of Birth: An Analysis of Linked National Data from 2006 to 2012. BMJ Publishing Group, 2020.
MLA-referens (9:e uppl.)Opondo, C., et al. Variations in Neonatal Mortality, Infant Mortality, Preterm Birth and Birthweight in England and Wales According to Maternal Country or Region of Birth: An Analysis of Linked National Data from 2006 to 2012. BMJ Publishing Group, 2020.