Cally J. Tann, MBChB, PhD, MSc, is a professor of neonatal medicine and child health at the London School of Hygiene & Tropical Medicine and a consultant neonatologist at University College London Hospital. Her research focuses on the risks and impacts of common newborn conditions on the developing brain and how to best support children with developmental disabilities and their families. She is the founder of the Baby Ubuntu program of early care and support for young children with developmental disabilities and their families in resource-limited settings, and provides technical expertise to the WHO and the Gates Foundation on intervention strategies for newborn brain injury and childhood developmental disabilities. She also directs the global neonatal health faculty for the London Diploma in Tropical Medicine and Hygiene. Tann is a co-principal investigator of the OMWaNA study and lead investigator of the Co-Developing and Disseminating an Investment Case for Small and Sick Newborn Care in Uganda project.