Boonmak, Polpun, Suhattaya Boonmak, Thaponawong Mitsungnern, and Fa-ngam Chareonpol. “Comparison Study Between Face Shield and Pocket Mask for Adult Basic Life Support Training for Health Care Provider”. Srinagarind Medical Journal 29, no. 2 (May 24, 2014): 121–126. Accessed May 22, 2022. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/18261.