Smith died at the Rockefeller Institute Hospital on October 4 , 1944 of a heart attack , at the age of 70 , broken-hearted over the death of his wife from cancer five months earlier , on May 4 , 1944 .
Smith died at the Rockefeller Institute Hospital on October 4 , 1944 of a heart attack , at the age of 70 , broken-hearted over the death of his wife from cancer five months earlier .