“…In 2007, WHO conducted the second annual survey on the distribution and composition of first-and second-line antiretroviral therapy regimens used in low-and middleincome countries (46,47 As low-income countries rapidly expand their HIV treatment programmes, they are increasingly faced with the need to make secondAs low-income countries rapidly expand their HIV treatment programmes, they are increasingly faced with the need to make secondline regimens available. In response to requests from national programme managers and regulatory agencies for additional operational line regimens available.…”