1. Department of Medicine,
2. Department of Laboratory Medicine & Pathobiology, and
3. Department of Medicine and
4. Swiss Tropical and Public Health Institute, University of Basel, Allschwil, Switzerland; and
5. Toronto Lung Transplant Program, University Health Network, Toronto, Ontario, Canada;
6. Department of Biostatistics, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada;
7. Department of Medicine, Duke University Medical Center, Durham, North Carolina