[1] Ctr Hosp Jolimont, Serv Pneumol, B-7100 La Louviere, Belgium
[2] Ctr Hosp Jolimont, Serv Med Interne, B-7100 La Louviere, Belgium
[3] Ctr Hosp Jolimont, Lab Biol Clin, B-7100 La Louviere, Belgium
[4] Ctr Hosp Jolimont, Serv Radiol, B-7100 La Louviere, Belgium
[5] Univ Ziekenhuis Leuven Gasthuisberg, Serv Anatomopathol, B-3000 Leuven, Belgium