I am a Professor of Medical Statistics and Epidemiology, with a DPhil (PhD) in Medical Statistics from the University of Oxford (UK), and an MSc in Medical Statistics from London School of Hygiene & Tropical Medicine (LSHTM). Before joining LSHTM, I was a Child Growth & Development Senior Research Fellow at the Centre for Global Child Health (SickKids) - Canada. Previous to this, I was at the University of Oxford as the Lead Statistician of the INTERGROWTH-21st Project, an international multi-centre project that resulted in some key publications i.e., the international standards for pregnancy dating, standards for monitoring fetal size during pregnancy, neonatal size at birth, postnatal standards for monitoring preterms, and gestational weight gain standards among others. The international growth standards are currently used in several hospitals/countries and have contributed to changes in clinical practise. I started my research carreer at the Kenya Medical Research Institute (KEMRI)/Wellcome Trust Research Centre as a Statistics intern and then was employed as a Medical Statistician.