<qa>  What is the term for non-childbearing potential?8. Women of childbearing potential WOCBP must be using an adequate and effective double barrier method of contraception appendix 4 and is willing to continue practising these birth control methods during the trial to avoid pregnancy and for a period of at least 12 weeks after the last dose of study medication. Note: Non-childbearing potential is defined as either post-menopausal 12 months of spontaneous amenorrhoea and 45 years or physically incapable of becoming pregnant with documented tubal ligation, hysterectomy or bilateral oophorectomy. 