Section 6. (a) Except as otherwise provided by law or regulation, the personal liability of a shareholder of a professional corporation organized under this chapter shall be no greater in any respect than that of a shareholder of a corporation organized under chapter 156D.
(b) This chapter shall not alter any law applicable to the relationship between a person rendering professional services and a person receiving such services, including liability arising out of such professional services.
(c) Any privilege applicable to communications between a person rendering professional services and the person receiving such services shall extend to communications between a professional corporation or its employees rendering professional services and the person receiving such services.