[1] St James Univ Hosp, Leeds, England
[2] Strasbourg Univ Hosp, Strasbourg, France
[3] Duke Univ, Durham, NC USA
[4] Royal Brompton Hosp, London, England
[5] Cleveland Clin, Cleveland, OH USA
[6] IRCCS, Ist Nazl Tumori, Fdn Pascale, Naples, Italy
[7] Aix Marseille Univ, Marseille, France
[8] Hosp Syst Marseille, Marseille, France
[9] Univ Hosp Leuven, Louvain, Belgium
[10] Univ Hosp Virgen Macarena, Seville, Spain
[11] Pomeranian Med Univ, Szczecin, Poland
[12] Univ Med, Sch Pecs, Pecs, Hungary
[13] Osped Riuniti Ancona, Ancona, Italy
[14] Papworth Hosp NHS Fdn Trust, Papworth Everard, England
[15] Univ Antwerp Hosp, Antwerp, Belgium
[16] Salamanca Univ Hosp, Salamanca, Spain
[17] Univ Roma La Sapienza, Fdn Eleonora Lorillard Spencer Cenci, I-00185 Rome, Italy
[18] Univ Pisa, Pisa, Italy
[19] Uludag Univ, Bursa, Turkey
[20] Jagiellonian Univ Coll Med, Dept Thorac Surg, John Paul II Hosp, Krakow, Poland
[21] ELK Berlin Chest Hosp, Berlin, Germany
[22] Univ Zurich Hosp, Zurich, Switzerland
[23] Washington Univ, St Louis, MO USA
[24] Univ Turin, Turin, Italy
[25] Med Univ Vienna, Vienna, Austria
[26] Istanbul Fac Med, Istanbul, Turkey