K. . Ienghong, T. Suzuki, S. Tiamkao, V. Bhudhisawasdi, D. Gaysonsiri, and K. Apiratwarakul, “Point of Care Ultrasound Training during the Coronavirus Disease 2019 Pandemic”, Open Access Maced J Med Sci, vol. 9, no. E, pp. 443–446, Jun. 2021.