Empyema

• Yale New Haven Hospital — New Haven, Connecticut, United States
• Northwestern University — Chicago, Illinois, United States
• Rush University Medical Center — Chicago, Illinois, United States
• Henry Ford Hospital — Detroit, Michigan, United States

• UNC Lingeberger Comprehensive Cancer Center — Chapel Hill, North Carolina, United States

Not specified

• CHU Amiens — Amiens, France

• Carolinas Medical Center — Charlotte, North Carolina, United States

• Tulane Medical Center Tulane University Section of Pulmonary DiseasesTulane University Section of Pulmonary Diseases — New Orleans, Louisiana, United States

• Trauma Center, Groote Schuur Hospital,University of Cape Town — Cape Town, Western Cape, South Africa

• PGIMER — Chandigarh, India

• Hospital Carlos Haya — Málaga, Andalusia, Spain
• Complejo Hospitalario Toledo — Toledo, Castille-La Mancha, Spain
• Hospital Principe de Asturias — Alcalá de Henares, Madrid, Spain
• Hospital Universitario de Getafe — Getafe, Madrid, Spain

• Niels Katballe — Aarhus, Aarhus N, Denmark
• Vytautas Nekrasas — Aalborg, Denmark
• Niels Katballe — Aarhus N, Denmark
• Peter B Licht — Odense, Denmark