Ntlha e e Kwa Tlase

b Bona The Journal of Thoracic and Cardiovascular Surgery, Bolumo 134, No. 2, ts. 287-288; Texas Heart Institute Journal, Bolumo 38, No. 5, ts. 563; Basics of Blood Management, ts. 2; le Continuing Education in Anaesthesia, Critical Care & Pain, Bolumo 4, No. 2, ts. 39.