Letter to the editor: Japan's emergency approval system under the COVID-19 pandemic.

4 In the subgroup analysis limited to Japanese patients, the difference was only 6.3 h, which did not reach statistical significance. 4 Furthermore, the protocol prohibits the concomitant use of remedies other than acetaminophen; however, in actual clinical practice, cough suppressants and expectorants are usually used to treat COVID‐19‐infected patients.

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