00334nas a2200121   4500000000100000008004100001260003800042100001300080700001700093700003000110700001600140245005600156       2006                            d  bWorld Health OrganizationaGeneva1 aIvers R.1 aH. Viet Dang1 aWorld Health Organization1 aJan Stephen00aHow to assess the impact of the programme. Module 6