CNTF genotype is associated with muscular strength and quality in humans across the adult age span. - Roth,M.S.; Schrager,A.M.; Ferrell,E.R.; Riechman,S.E.; Metter,E.J.; Lynch,N.A.; Lindle,R.S.; Hurley,B.F. (J Appl Physiol, 2001)