[1] Hop G & R Laennec, Inst Thorax, Serv Pneumol, F-44093 Nantes 1, France
[2] Univ Nantes, Fac Med, F-44000 Nantes, France
[3] CHU Nantes, Inst Thorax, Serv Pneumol, F-44000 Nantes, France
[4] Univ Aix Marseille 2, Fac Med, F-13005 Marseille, France
[5] Assistance Publ Hop Marseille, Serv Pneumoallergol, F-13005 Marseille, France