Ngamvithayapong-Yanai, J. et al. 2013. Engaging women volunteers of high socioeconomic status in supporting socioeconomically disadvantaged tuberculosis patients in Chiang Rai, Thailand. Western Pacific Surveillance and Response. 4, 1 (Jan. 2013). DOI:https://doi.org/10.5365/wpsar.2012.3.4.013.