Nota sa Ibaba
b Hilingon an The Journal of Thoracic and Cardiovascular Surgery, Volume 134, No. 2, p. 287-288; Texas Heart Institute Journal, Volume 38, No. 5, p. 563; Basics of Blood Management, p. 2; asin Continuing Education in Anaesthesia, Critical Care & Pain, Volume 4, No. 2, p. 39.