The important info from the PDF.
"We are recruiting the following participants:
• ME/CFS group: participants who have received a diagnosis of ME/CFS (where diagnosis was made using the CCC 2003 or ICC 2011 definitions).
• PVS group: participants reporting chronic symptoms following a known viral infection, but have not received a diagnosis of ME/CFS nor other medical condition explaining for the symptoms.
• Control group: participants who report no health concerns.
The inclusion criteria are as follows:
• Aged 18 to 65 years old • Non-smoker
• No current diagnosis of serious chronic illness, e.g. autoimmune, cancer, cardiovascular, diabetes or primary psychiatric diseases
• Not pregnant or breastfeeding
This study involves:
• Donation of 14ml of blood
• Completion of an online questionnaire (in English)"