สุวรรณวัฒนะ ภ. (2013). Comparative study of simple smear, formalin ethyl acetate concentration and Parasep® faecal parasite concentration technique for identification of the parasite and opportunistic protozoa in stool specimen from HIV infected patients. Disease Control Journal, 39(4), 318–325. https://doi.org/10.14456/dcj.2013.6