Columbia subject headings:
Heart--Surgery--Patients--United States--Biography.
Nolen, William A., 1928-1986.
Surgeons--United States--Biography.
Harvard subject headings:
Princeton subject headings:
Heart--Surgery--Patients--United States--Biography.
Nolen, William A., 1928-1986--Health.
Surgeons--Minnesoto--Litchfield--Biography.