Swai, S. J., Damian, D. J., Urassa, S., Temba, B., Mahande, M. J., Philemon, R. N. and Msuya, S. E. (2017) “Prevalence and risk factors for HIV among people aged 50 years and older in Rombo district, Northern Tanzania”, Tanzania Journal of Health Research, 19(2). doi: 10.4314/thrb.v19i2.2.