Nota na Pia di Pagina

b Wak The Journal of Thoracic and Cardiovascular Surgery, Volumen 134, Num. 2, pag. 287-288; Texas Heart Institute Journal, Volumen 38, Num. 5, pag. 563; Basics of Blood Management, pag. 2 y Continuing Education in Anaesthesia, Critical Care & Pain, Volumen 4, Num. 2, pag. 39.