Lung transplant survivors, Dr. Joel Cooper (rear), head of the transplant team at Toronto General and Mount Sinai hospitals, introduces four patients (...)

Original Toronto Star caption: Lung transplant survivors, Dr. Joel Cooper (rear), head of the transplant team at Toronto General and Mount Sinai hospitals, introduces four patients - the only men breathing with one transplanted lung - to doctors form around the world who are here to learn how to perform single-lung transplants.