Operational linkages between HIV, tuberculosis, and maternal and child health services for HIV testing and counseling in 2010. Remark: Size of each box indicates the extent of availability (e.g. ¼ of sub-districts with VCT in PNG). A red arrow indicates systematic referral and a light-colored arrow indicates ad-hoc referral. ANC: Antenatal care. Source: National HIV Programs of 6 countries.