. 2019 Aug 29;8(8):e13400. doi: 10.2196/13400
©Kim Gibson, Ali Al-Naji, Julie-Anne Fleet, Mary Steen, Javaan Chahl, Jasmine Huynh, Scott Morris. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 29.08.2019.
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Figure 9.
Equation 4.