Shi J., Zhao CB, Vollmer TL, Tyry TM, Kuniyoshi SM2008. APOE 4 allele is associated with cognitive impairment in patients with multiple sclerosis. Neurology70:185-90.
2.
Lipton RB, Bigal ME, Ashina S., Burstein R., Siberstein St, Reed ML, Serrano D., Stewart WF2008. Cutaneous allodynia in the migraine population. Ann Neurol63:148-58.