. 2020 Mar 27;22(3):e16769. doi: 10.2196/16769
©Calvin Kalun Or, Kaifeng Liu, Mike K P So, Bernard Cheung, Loretta Y C Yam, Agnes Tiwari, Yuen Fun Emmy Lau, Tracy Lau, Pui Sze Grace Hui, Hop Chun Cheng, Joseph Tan, Michael Tow Cheung. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 27.03.2020.
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Figure 1.
Trial flowchart. CG: control group; IG: intervention group.