COVID-19; Humans; Neuropsychological Tests; Post-Concussion Syndrome; benzodiazepine derivative; dihydroergotamine; melatonin; metoclopramide; nonsteroid antiinflammatory agent; serotonin uptake inhibitor; trazodone; causal reasoning; clinical evaluation; diagnostic procedure; disease classification; disease severity; high risk population; human; ICD-10; long COVID; mental disease; neuropsychological test; neuropsychology; postconcussion syndrome; prevalence; prognosis; Review; risk factor; traumatic brain injury; treatment planning; Concussion; Mild traumatic brain injury (mTBI); Postconcussion/postconcussional syndrome (PCS); Postconcussional disorder (PCD)