Kaewnaphan, B., Athipanyasilp, N., Khamsorn, S., Kantakamalakul, W. and Horthongkham, N. 2019. Detection of human metapneumovirus antigen in nasopharyngeal washing specimens by immunofluorescence assay. Journal of Medicine and Health Sciences. 26, 1 (Apr. 2019), 48–55.