Medical ethics are the collective conscience of the profession. It is axiomatic of a profession that its ethical standards are decided by its members. A profession sets a standard of conduct for its members and the essence of professional freedom for a doctor is his right to act in professional matters uninfluenced by any consideration other than the judgement of his fellows.
Clarke J. (Points from Letters) Abortion (Amendment) Bill. Br Med J. 1975 Aug 09;3(5979):373.