Detection of low levels of human immunodeficiency virus (HIV) may be critical for early diagnosis of pediatric HIV infection by use of dried blood spots. - Walter J; Kuhn L; Semrau K; Decker DW; Sinkala M; Kankasa C; Thea DM; Bulterys M; Ou CY; Aldrovandi GM (Journal of clinical microbiology, 2009)