Authors: Howard Bergman; Luigi Ferrucci; Jack Guralnik; David B Hogan; Silvia Hummel; Sathya Karunananthan; Christina Wolfson Journal: J Gerontol A Biol Sci Med Sci Date: 2007-07 Impact factor: 6.053
Authors: Kenneth Rockwood; Xiaowei Song; Chris MacKnight; Howard Bergman; David B Hogan; Ian McDowell; Arnold Mitnitski Journal: CMAJ Date: 2005-08-30 Impact factor: 8.262