Section 5517 - Certificate of membership; approval; terms(a) No certificate of membership providing for sick, accident and/or death benefits to members or their beneficiaries, as hereinafter provided, shall be issued by any association unless the form of the same shall first be filed with and approved by the Commissioner.(b) A certificate of membership, among other conditions not contrary to the provisions of this chapter, may specify the diseases for which limited benefits may be paid in sickness or death and may also specify the causes of personal injuries, or death therefrom, for which no benefits will be paid.(c) A certificate of membership may also restrict the payment of any benefit for sickness, accident and/or death that occurs within a specified time after the issuance of such certificate to the refund of all dues paid by the members or their beneficiaries less the expense of carrying the same on the books of the association, and the payment of such refund shall fully liquidate all claims of a member against the association by reason of such certificate of membership.(d) A certificate of membership may also limit the time which shall elapse before any benefits are payable and may be paid within reasonable limitations approved by the Commissioner.18 Del. C. 1953, § 5517; 56 Del. Laws, c. 380, § 1.;