Clinical recommendations for high altitude exposure of individuals with pre-existing cardiovascular conditions. by Parati, G, Agostoni, P, Basnyat, B, Bilo, G, Brugger, H, Coca, A, Festi, L, Giardini, G, Lironcurti, A, Luks, A, Maggiorini, M, Modesti, P, Swenson, E, Williams, B, Bärtsch, P, Torlasco, C