Guidelines for autologues transfusion: II. Perioperative haemodilution and cell salvage. - Napier,J.A.; Bruce,M.; Chapman,J.; Duguid,J.K.; Kelsey,P.R.; Knowles,S.M.; Murphy,M.F.; Williamson,L.M.; Wood,J.K.; Lee,D.; Contreras,M.; Cross,N.; et al. (Br J Anaesth, 1997)