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Joshua is an Australian medical doctor with a PhD in maternal and perinatal epidemiology. His research work has primarily focused on maternal and perinatal health issues affecting women and families living in resource-constrained settings, particularly on the major causes of maternal and perinatal morbidity and mortality.
For the past several years, he has co-ordinated and contributed to a number of WHO-led primary research, knowledge synthesis and implementation activities in low- and middle-income country settings. His areas of professional interest are clinical epidemiology, interventional research and systematic reviews.
Joshua is currently co-ordinating the WHO ACTION Trials (Antenatal Corticosteroids for Improving Outcomes of Preterm Newborns), two multi-country randomized controlled trials on the efficacy of antenatal corticosteroids in hospitals in low-resource countries. He is also co-ordinating a five-country study on the use of a low-cost Doppler flow assessment device (Umbiflow ®) in low-risk pregnant women. He continues to contribute to the development of WHO maternal and perinatal health recommendations for global use, and also led the updating of the WHO estimates of levels and trends in preterm birth.