13. A person shall be disqualified for being chosen as or for being a member of the Corporation, the Standing Committee or the Medical Benefit Council--

(a) if he is declared to be of unsound mind by a competent court; or

(b) if he is an undischarged insolvent; or

(c) if he has directly or indirectly by himself or by his partner any interest in a subsisting contract with, or any work being done for, the Corporation except as a medical practitioner or as a shareholder (not being a director) of a company; or

(d) if before or after the commencement of this Act, he has been convicted of an offence involving moral turpitude.