The administering or dispensing directly, but not prescribing, of any controlled substance listed in any schedule to a drug dependent person for the purpose of continuing his or her dependence upon the drugs in the course of conducting an authorized clinical investigation in the development of a treatment and rehabilitation program for drug dependent persons shall be deemed to be within the meaning of the term “in the course of professional practice,” provided that:

(1)  Approval is obtained prior to the initiation of the program by submission of an application for approval to proper federal authorities; and

(2)  A license to operate the program within the state is obtained from the director of health.