Businessman unconscious on the floor, co-workers around
X-ray of hand on heart
Doctor performing CPR on Asian patient in the emergency room
BERLIN, GERMANY - JUNE 17: A doctor and a nurse prepare a patient possibly suffering from the consequences of a heart attack at the Unfallkrankenhaus Berlin (UKB) hospital in Marzahn district on June 17, 2013 in Berlin, Germany. The UKB hospital has among the most modern emergency care services in Germany. (Photo by Theo Heimann/Getty Images)
Patient being revived by defibrillator machine
