Health & Safety Institute: http://www.hsi.com/

American Heart Association: http://www.heart.org/HEARTORG/

Emergency Care & Safety Institute: http://ecsinstitute.org/

Occupational Safety & Health Administration: https://www.osha.gov/

National Association of Emergency Medical Technicians: http://www.naemt.org/

Journal of Emergency Medical Services: http://www.jems.com/

Divers Alert Network: http://www.diversalertnetwork.org/medical/

Old Dominion EMS Alliance: http://odemsa.vaems.org/