 To motivate enrollment into the study food, bedding, and medical care were offered but the risks involved with the open perineal biopsy procedures were not fully explained to the patients, and many of them suffered long term health consequences.Hudson claimed that the procedure, involving excising a 2.5x1x.5 cm core of posterior prostate caused no harm, however an independent research team proved otherwise, reporting post-op incidence of impotence, rectal laceration, and a diminishing sexual function in 24 patients.The assertion that the biopsies caused no harm was again refuted in an interview by one of his residents who claimed that impotence was a common result.