Fig. 1From: Helicopter emergency medical service for time critical interfacility transfers of patients with cardiovascular emergenciesSource for relief: swisstopo, 2016Interfacility transfers for cardiovascular emergencies by HEMS in Switzerland. Topographical map of Switzerland showing cantonal borders and all conducted emergency secondary missions from July 3rd, 2019, and March 31st, 2021. Geo positions of the referral hospitals are jittered to visualize the different numbers of missions per route.Back to article page