Book a CPR training session for Wikimania volunteers with the Swedish Red Cross. Coordinate with Erin at WMF and our volunteer coordinator and Eric if it should happen during the volunteer training days or before.
The training is free for volunteers, but staff members need to pay. See information here: https://www.redcross.se/engagera-dig/vara-kurser/forsta-hjalpen/kurser-for-privatpersoner/