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15 (5) Abortion is unlawful but may be allowed -
(a) on medical or therapeutic grounds including where a doctor certifies that –
(i) continued pregnancy will endanger the life or constitute a serious threat to the physical health of the woman;
(ii) continued pregnancy will constitute a serious threat to the mental health of the woman;
(iii) there is serious risk that the child will suffer from physical or mental defect of such a nature that the child will be irreparably seriously handicapped;
(b) where the pregnancy resulted from rape, incest or unlawful sexual intercourse with a mentally retarded female; or
(c) on such other grounds as Parliament may prescribe.