Hiroya Kumamaru, M.D. PhD, is Vice Director of AOI Universal Hospital since 2013. He graduated from Medical School, Keio University in 1980. Trained of General Surgery & Cardiovascular Surgery in Keio University Hospital & in other Affiliated Hospitals 1980 to 1988. Clinical Research Fellowship in the Dept. of Cardiovascular Surgery, St. Vincent Medical Center in LA. Surgical Residency in Cardiovascular Surgery of Centre Cardio-Thoracique de Monaco Stuff Surgeon of Cardiovascular Surgery in several affiliated Hospitals till 2008.Cardiovascular Medical Director in Pfizer Japan from 1996 to 2005. Private practice in Tokyo Metropolitan area 2008 to 2013 focusing on smoking cessation.