American Psychiatric Association. Diagnostic and statistical manual of mental disorders. 5th edn.Arlington, VA: American Psychiatric Publishing, 2013.
2.
DodickDWTurkelCCDeGryseRE, et al.OnabotulinumtoxinA for treatment of chronic migraine: pooled results from the double-blind, randomized, placebo-controlled phases of the PREEMPT clinical program. Headache2010; 50(6): 921–936.