when mothers have access to antiretrovirals, women should be advised to breast-feed, because it reducesod that you will pass hiv to your baby. now, if you -- the reason i said listen to this closely is you will realize that this leaves an enormous hole right in the middle where, of women who do not live in countries where formula feeding is a safe alternative and an affordable alternative, and women who do not have access to anti-retrovirals, right? people, experts estimate that in africa, in africa as a whole 37, only 30% of -- 37% of pregnant women who are hiv positive have access to arvs, right? so 63% of hiv positive pregnant women in africa, they estimate, have no access to arvs. what should those women be advised to do? the who now recommends since 2010 that if a mother is hiv positive, even if she has no access to the anti-retrovirals, she should be advised to feed her baby, to breast-feed her baby. so there is this, there's a huge complication to the old story that we're familiar with about the value of breast-feeding in poor countries. >> does anybody have a question on this pa