About the Authors

Velina Vangelova-Korpinen

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Writing – original draft

velina.vangelova-korpinen@hus.fi

Affiliation Outpatient Clinic for Persistent Symptom Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Helena Liira

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Writing – original draft, Writing – review & editing

Affiliation Outpatient Clinic for Persistent Symptom Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Samu N. Kurki

Roles Writing – original draft

‡ SNK, JHS, MV and MV also contributed equally to this work.

Affiliations Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences, University of Helsinki, Helsinki, Finland, Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland

Markku Sainio

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Conceptualization, Writing – review & editing

Affiliation Outpatient Clinic for Persistent Symptom Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Antti Malmivaara

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Conceptualization, Writing – original draft, Writing – review & editing

Affiliations Finnish Institute for Health and Welfare, Helsinki, Finland, Orton Orthopaedic Hospital, Helsinki, Finland, University of Helsinki, Helsinki, Finland

Mari Kanerva

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Funding acquisition, Writing – review & editing

Affiliations Outpatient Clinic for Persistent Symptom Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland, Infection Control Unit, Turku University Hospital, The Wellbeing Services County of Southwestern Finland, Turku, Finland

Jan-Henry Stenberg

Roles Conceptualization, Writing – review & editing

‡ SNK, JHS, MV and MV also contributed equally to this work.

Affiliation Department of Psychiatry, Brain Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Mikko Varonen

Roles Data curation, Project administration

‡ SNK, JHS, MV and MV also contributed equally to this work.

Affiliation Outpatient Clinic for Persistent Symptom Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Mikko Venäläinen

Roles Methodology, Writing – original draft, Writing – review & editing

‡ SNK, JHS, MV and MV also contributed equally to this work.

Affiliation Department of Medical Physics, Turku University Hospital, Turku, Finland

Piia Vuorela

Roles Writing – review & editing

Affiliation Finnish Medicines Agency Fimea, Helsinki, Finland

Jari Arokoski

Contributed equally to this work with: Velina Vangelova-Korpinen, Helena Liira, Markku Sainio, Antti Malmivaara, Mari Kanerva, Jari Arokoski

Roles Conceptualization, Writing – review & editing

Affiliation Division of Rehabilitation, Department of Internal Medicine and Rehabilitation, Helsinki University Hospital and University of Helsinki, Helsinki, Finland

Competing Interests

Helena Liira and Markku Sainio have received honorariums for lectures and workshops about functional disorders and post-Covid-19 condition. Jan-Henry Stenberg has received lecture fees from Alma Media, Biogen, Boehringer-Ingelheim, Janssen, Lilly, Lundbeck, Merck, Otsuka, Professio, Sanofi Genzyme. Helena Liira, Markku Sainio and Velina Vangelova-Korpinen are members of the Oslo Chronic Fatigue Network. The remaining authors declare no conflicts of interest relating to this manuscript.