 Allegations of case fraud have dogged Heimlich's promotion of abdominal thrusts as a treatment for drowning.The 2005 drowning rescue guidelines of the American Heart Association did not include citations of Heimlich's work and warn against the use of the Heimlich maneuver for drowning rescue as unproven and dangerous, due to its risk of vomiting leading to aspiration.In 2003, Heimlich's colleague Edward Patrick issued a press release portraying himself as the uncredited co-developer of the maneuver.