Houston Chronicle, Dec. 29, 2007 After a blood shortage forced the University of Texas M.D. Anderson Cancer Center to cancel Gilbert Juarez's surgery last summer, hospital officials tried a novel approach: They asked for Juarez's help. Could he stage a blood drive of his own? The idea of patient-led drives could be controversial in some circles, but bioethicist Dr. William Winslade, of UTMB, says it poses no problems as long as patients are told the blood isn't necessarily going to them and as long as they can say no.