[1] Univ Pittsburgh, Pittsburgh, PA 15260 USA
[2] Inst Pathol, Graz, Austria
[3] Inst Pathol Anat, Pavia, Italy
[4] Osped Umberto 1, Venice, Italy
[5] Univ Florence, I-50121 Florence, Italy
[6] CHU Cote Nacre, Caen, France
[7] Ataturk Chest Dis Hosp, Ankara, Turkey
[8] Adana Univ, Adana, Turkey
[9] Llandough Hosp, Cardiff & Vale NHS Trust, Cardiff, Wales
[10] Methodist Hosp, Houston, TX USA