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Volume 29, Number 5—May 2023
Research

Case–Control Study of Long COVID, Sapporo, Japan

Toshiaki Asakura1, Takashi Kimura1Comments to Author , Isaku Kurotori, Katabami Kenichi, Miyuki Hori, Mariko Hosogawa, Masayuki Saijo, Kaori Nakanishi, Hiroyasu Iso, and Akiko Tamakoshi
Author affiliations: Hokkaido University, Sapporo, Japan (T. Asakura, T. Kimura, I. Kurotori, K. Kenichi, A. Tamakoshi); National Center for Global Health and Medicine, Tokyo, Japan (M. Hori, M. Hosogawa, H. Iso); Health and Welfare Bureau, Sapporo (M. Saijo, K. Nakanishi)

Main Article

Figure 2

Flow chart of participant selection for a case–control study of long COVID, Sapporo, Japan. Controls were persons who self-reported as uninfected. *The Sapporo Public Health Office kept a registry of all the confirmed cases from the beginning of the COVID-19 epidemic.

Figure 2. Flow chart of participant selection for a case–control study of long COVID, Sapporo, Japan. Controls were persons who self-reported as uninfected. *The Sapporo Public Health Office kept a registry of all the confirmed cases from the beginning of the COVID-19 epidemic.

Main Article

1These authors contributed equally to this article.

Page created: March 13, 2023
Page updated: April 18, 2023
Page reviewed: April 18, 2023
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