MAP2K3 and myalgic encephalomeyelitis/chronic fatigue syndrome: The 24 h/0 h ratio of ARF6, a GTPase involved in membrane trafficking and cytoskeletal dynamics, and the 15 min/0 h ratio of MAP2K3, a kinase in the MAPK signalling pathway that mediates stress responses, both positively correlated with better general health in ME/CFS patients, as measured by SF‐36 General Health scores.