(a) In the absence of knowledge of the revocation of a declaration, a physician or other health-care provider is not subject to civil or criminal liability, or discipline for unprofessional conduct, for carrying out the declaration or the instructions of a designee under section 187(a) of this title, or for giving effect to a written consent under section 192 of this title.
(b) A physician or other health-care provider, whose actions under this chapter are in accord with reasonable medical standards, is not subject to criminal or civil liability, or discipline for unprofessional conduct, with respect to those actions.
(c) A physician or other health-care provider, whose decisions about the validity of consent under section 191 of this title are made in good faith, is not subject to criminal or civil liability, or discipline for unprofessional conduct, with respect to those decisions.
(d) A designee under section 187(a) of this title or a person authorized to consent under section 192 of this title, whose decisions are made in good faith pursuant to this chapter, is not subject to criminal or civil liability, or discipline for unprofessional conduct, with respect to those decisions.