[1] Manchester Royal Infirm, Dept Resp Med, Manchester M13 9WL, Lancs, England
[2] Univ Milan, IRCCS, Osped Maggiore Milano, Ist Tisiol & Malattie Apparato Resp, Milan, Italy
[3] Klin Pneumol Beatmungsmed & Infektiol, Bochum, Germany
[4] Daikonierkrankenhaue Rotenburg, Lungenlinik Unterstedt, Rotenburg, Germany
[5] Univ Antwerp Hosp, Microbiol Lab, Antwerp, Belgium
[6] Smittskyddsenheten, Stockholm, Sweden
[7] Hosp Clin Barcelona, Clin Pneumol & Cirurgia Torac, Barcelona, Spain
[8] Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands