http://www.diversalertnetwork.org/contact/index.asp - Divers Alert Network DAN
http://www.britishvirginislands.com/ntk_emergency.htm - BVI Emergency Info
http://scuba-doc.com/listchmbr.htm - Diving Medicine USA Online,
http://www.scuba-doc.com/divfla.htm - Florida Dive Medicine Online
http://uhms.org/AboutUHMS/tabid/90/Default.aspx - Undersea & Hyperbaric Medical Society