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. 2021 Mar 26;139:104813. doi: 10.1016/j.jcv.2021.104813

Fig. 1.

Fig. 1

Study protocol. We enrolled patients with suspected or confirmed COVID-19; all provided written informed consent. Nasopharyngeal swab samples were collected, viral RNA was extracted, and divided into two aliquots for amplification by RT-LAMP and RT-PCR.