A great school here in the Northeastern US is SOLO. (Stonehearth Open Learning Opportunities).

http://www.soloschools.com/home.html

They have courses in WFA, WFR, WEMT and other specialty courses like SAR and High Angle Rescue. I think they also have an International Medicine module for guides that are already WFR or WEMT certified.

I have taken courses with them that the AMC club up here sponsored, and their instructors were great. Other folks mentioned the NOLS WMI school, which is also awesome, but, New Hampshire or Vermont are a little closer to fly to from Sweden than the NOLS headquarters would be