N.Y.C. Admin. Code § 13-109: § 13-109 Purchase of credit for past service as internes.

In the same manner as hereinbefore provided under section 13-108 of this chapter for the purchase of city-service preceding membership, on or before January first, nineteen hundred fifty-three, or within one year after first beginning membership, credit may be purchased for service preceding membership not exceeding a total of three years as an interne, duly appointed by and removable by the city of New York, of any hospital owned and operated by such city, provided that for any such period maintenance, consisting of room and board, was received without accompanying cash payment.