About Dr Oscar John Ma
Doctor Oscar John Ma worked at Oregon Health & Science University from 2007 to 2019. He was a professor and the chair of emergency medicine at the university. It was between 2011 and 2013 that Dr. Oscar John Ma was President of the Professional Staff for OHSU Healthcare. People who worked for Dr. Oscar John Ma were the CEO and co-founder of new and innovative emergency medicine applications called Innovative, Disruptive, and Emerging (IDEA-EM). Dr. Oscar John Ma has written 20 reference books that have been translated into more than 10 languages. These books include Ma and Mateer's Emergency Ultrasound and Tinitnalli's Emergency Medicine. Dr. Oscar John Ma has spent most of his time studying how ultrasound can be used to diagnose injuries in people who have been hurt in accidents.