Survivors of avalanche accidents: posttraumatic stress disorder symptoms and quality of life: a multicentre study oleh Charlotte Léonard, Anaëlle Charriau-Perret, Guillaume Debaty, Loïc Belle, Cécile Ricard, Caroline Sanchez, Pierre-Marie Dupré, Gregory Panoff, Thierry Bougerol, Damien Viglino, Marc Blancher, the Northern French-Alps Emergency Network (“RENAU”)