Section 19A(1) in The West Bengal State Health Service Act, 1990
(1)elevate or promote any person holding a teaching post in the West Bengal Medical Education Service to a higher rank or make recruitment to any teaching post in the West Bengal Medical Education Service, in such manner, and subject to such terms and conditions, as may be prescribed:Provided that no such order shall be made after the expiry of eighteen years from the date of coming into force of this Act;