_:b56798550 _:b56798552 . _:b56798551 "T079" . _:b56798553 "length of hospital stay" . _:b56798552 . _:b56798550 _:b56798551 . _:b56798550 "1"^^ . _:b56798550 . _:b56798551 "C0023303" . _:b56798552 _:b56798553 . _:b56798553 . _:b56798550 . _:b56798550 .