Fatigue Syndrome, Chronic

• The First Hospital of Lanzhou University — Lanzhou, Gansu, China
• The Second Hospital & Clinical Medical School, Lanzhou University — Lanzhou, Gansu, China
• The Fourth Affiliated Hospital of Hebei University of Traditional Chinese Medicine — Shijiazhuang, Hebei, China
• Xiangyang Central Hospital — Xiangyang, Hubei, China

• Charité - Universitätsmedizin Berlin — Berlin, Germany

• Aarhus University — Aarhus, Region Midt, Denmark

• The Cohen Center for Recovery from Complex Chronic Illnesses (CoRE) — New York, United States

Not specified

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• Power Life Sciences — San Francisco, California, United States

• Johns Hopkins Hospital — Baltimore, Maryland, United States