The board may adopt and enforce regulations to carry out the purposes and objectives of this article, including regulations requiring (a) that the bylaws of a nursing corporation shall include a provision whereby the capital stock of such corporation owned by a disqualified person (as defined in Section 13401 of the Corporations Code), or a deceased person, shall be sold to the corporation or to the remaining shareholders of such corporation within such time as such regulations may provide, and (b) that a nursing corporation shall provide adequate security by insurance or otherwise for claims against it by its patients arising out of the rendering of professional services.