inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease (asa 1-2) prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid, pacs, pcs (icd-10 u09.9) 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations

inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease (asa 1-2) prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid, pacs, pcs (icd-10 u09.9) 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations

inclusion criteria: aged 18-60 years healthy or mild systemic disease (asa 1-2) prior to covid-19 symptoms consistent with long covid for at least 12 weeks diagnosed with long covid, pacs, pcs (icd-10 u09.9) working or studying prior to covid-19 documented informed consent according to gcp and national regulations

inclusion criteria: aged 18-60 years healthy or mild systemic disease (asa 1-2) prior to covid-19 symptoms consistent with long covid for at least 12 weeks diagnosed with long covid, pacs, pcs (icd-10 u09.9) working or studying prior to covid-19 documented informed consent according to gcp and national regulations

inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease (asa 1-2) prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid, pacs, pcs (icd-10 u09.9) 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations

inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease (asa 1-2) prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid, pacs, pcs (icd-10 u09.9) 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations

inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations

inclusion criteria: 1. aged 18-60 years 2. healthy or mild systemic disease prior to covid-19 3. symptoms consistent with long covid for at least 12 weeks 4. diagnosed with long covid 5. working or studying prior to covid-19 6. documented informed consent according to gcp and national regulations