title: Extraordinary claims require extraordinary evidence.
authors.forename: Stephen L
authors.initials: SL
authors.lastname: Hauser
authors.forename: S Claiborne
authors.initials: SC
authors.lastname: Johnston
mesh_terms: D002494:Central Nervous System Infections / Q000821:virology*; D002555:Cerebrospinal Fluid / Q000821:virology; D018920:Coculture Techniques; D017931:DNA Primers; D004279:DNA, Viral / Q000302:isolation & purification; D019317:Evidence-Based Medicine; D005189:False Positive Reactions; D015673:Fatigue Syndrome, Chronic / Q000134:cerebrospinal fluid / Q000821:virology*; D006801:Humans; D015203:Reproducibility of Results; D058008:Xenotropic murine leukemia virus-related virus / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D017931:DNA Primers; D004279:DNA, Viral