Written patient care policies shall be established and followed in the care of patients governing the following services: physician, dental, nursing, dietetic, pharmaceutical and an activity program and such diagnostic, social, psychological and therapy services as may be provided. Such policies shall be developed by a committee whose membership shall consist of at least one physician, the administrator, the supervisor of health services and such other professional personnel as may be appropriate. These policies shall be reviewed and revised by the committee at least annually and minutes of the committee meetings shall be maintained on file indicating the names of members present, the subject matter discussed and action taken.