Investigations ` ` have never substantiated these claims , '' Pentagon spokesman said . `` The behaviors of the physicians and psychiatrists were dictated by changes in regulations and changes in the understanding of ethical principles that were transmitted by the Department of Defense , '' said Thomson , a Columbia medical professor emeritus . Report : Doctors advised interrogators who treated captives inhumanely after attacks . Such treatment violated medical ethics , Columbia University , Open Society Watch say . Pentagon calls for full investigation of medical treatment after attacks .
Investigations ` ` have never substantiated these claims , '' Pentagon spokesman said . Report : Doctors advised interrogators who treated captives inhumanely after attacks . Such treatment violated medical ethics , Columbia University , Open Society Watch say . Pentagon calls for full investigation of medical treatment after attacks .