Stanford Health Care provides both general acute care services and tertiary medical care for patients locally, nationally and internationally. Organ transplantation, cancer diagnosis and treatment, cardiovascular medicine and surgery, and neurosciences are clinical specialties of worldwide renown. Among its many achievements, the first combined heart-lung transplant in the world was successfully completed at Stanford University Medical Center in 1981. The hospital plays a key role in the training of physicians and other medical professionals. It provides a clinical environment for the medical school's researchers as they study ways to translate new knowledge into effective patient care. Full-time Stanford faculty and community physicians make up the hospital medical staff.