Authors: Christopher Frank; Daren K Heyland; Benjamin Chen; Donald Farquhar; Kathryn Myers; Ken Iwaasa Journal: CMAJ Date: 2003-10-14 Impact factor: 8.262
Authors: D B Zahuranec; D L Brown; L D Lisabeth; N R Gonzales; P J Longwell; M A Smith; N M Garcia; L B Morgenstern Journal: Neurology Date: 2007-05-15 Impact factor: 9.910