Affiliation: | a Department of Thoracic and Cardiovascular Surgery, Jean-Minjoz Hospital, Besançon b Department of Thoracic Surgery, Calmette Hospital, Lille c Department of Thoracic Surgery, Larrey Hospital, Toulouse d Clinical and Biological Research Center, Saint-Jacques Hospital, Besançon e Department of Biostatistics and Epidemiology, Medical School, Besançon, France |