(1) Where any person does an act in good faith, for the purposes of medical or surgical treatment, an intent to cause death shall not be presumed from the fact that the act was or appeared likely to cause death.
(2) Any act which is done, in good faith and without negligence, for the purposes of medical or surgical treatment of a pregnant woman is justifiable, although it causes or is intended to cause a termination of pregnancy or miscarriage, or premature delivery, or the death of the child.
(3) Despite section 165, the treatment for the termination of a pregnancy shall be lawful if administered in accordance with the provisions of sections 166.
(4) For the purposes of this section “termination of pregnancy” has the same meaning assigned to it under section 166.