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Li, Jiawen, Chi Zhang, Zhao Wu, Guiqiang Wang, and Hong Zhao. "The Mechanism and Clinical Outcome of Patients With Corona Virus Disease 2019 Whose Nucleic Acid Test Has Changed From Negative to Positive, and the Therapeutic Efficacy of Favipiravir: A Structured Summary of a Study Protocol for a Randomised Controlled Trial." Trials 2020.

Li, Jiawen, et al. "The Mechanism and Clinical Outcome of Patients With Corona Virus Disease 2019 Whose Nucleic Acid Test Has Changed From Negative to Positive, and the Therapeutic Efficacy of Favipiravir: A Structured Summary of a Study Protocol for a Randomised Controlled Trial." Trials 2020.