The details of these doctrines vary among jurisdictions, but each generally serves to protect from malpractice liability physicians who elect to pursue one of several recognized courses of treatment, even if the elected course is not preferred by the majority. As one court stated, “where two or more schools of thought exist among competent members of the medical profession concerning proper medical treatment for a given ailment, each of which is supported by responsible medical authority, it is not malpractice to be among the minority in a given city who follow one of the accepted schools”