R. Udpaun, P. Munkhetvit, S. Buamongkol, P. Phunae, and K. Tragoolpua, “Validity and reliability of the Test of Knowledge and Awareness of universal precautions in Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University”, J Assoc Med Sci, vol. 47, no. 1, p. 53, Jan. 2014.