1. Division of AllergyPulmonary and Critical Care MedicineVanderbilt UniversityNashvilleTennesseeUSA
2. Sheffield Pulmonary Vascular Disease UnitRoyal Hallamshire HospitalSheffield Teaching Hospitals National Health Service (NHS) Foundation TrustSheffieldUnited Kingdom
3. Division of Pulmonary and Critical Care MedicineBrigham and Women's HospitalHarvard University Medical SchoolBostonMassachusettsUSA
4. Section of Pulmonary, Critical Care and Sleep MedicineBaylor College of MedicineHoustonTexasUSA
5. Department of Obstetrics and GynaecologySheffield Teaching Hospitals NHS Foundation TrustSheffieldUnited Kingdom
6. Section of Pulmonary DiseasesKing Fahad Specialist HospitalDammamSaudi Arabia
7. Pulmonary, Critical Care and Sleep DivisionTufts Medical CenterBostonMassachusettsUSA
8. Institute of Cardiovascular and Medical SciencesCollege of Medical and Veterinary ScienceUniversity of GlasgowGlasgowUnited Kingdom
9. Division of PulmonaryAllergy, Critical Care, Occupational and Sleep MedicineIndiana University School of Medicine and Roudebush Veterans Affairs Medical CenterIndianapolisIndianaUSA