Sermsak Lolak. 2007. The prevalence and associated factors of anxiety and depression in Thai patients with human immunodeficiency virus infection. Bangkok:Chulalongkorn University;
Sermsak Lolak. (2007) The prevalence and associated factors of anxiety and depression in Thai patients with human immunodeficiency virus infection (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Sermsak Lolak. The prevalence and associated factors of anxiety and depression in Thai patients with human immunodeficiency virus infection. Bangkok:Chulalongkorn University, 2007.
Sermsak Lolak. (2007) The prevalence and associated factors of anxiety and depression in Thai patients with human immunodeficiency virus infection (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.