FGF21 regulates PGC-1α and browning of white adipose tissues in adaptive thermogenesis - Fisher, F M; Kleiner, S; Douris, N; Fox, E C; Mepani, R J; Verdeguer, F; Wu, J; Kharitonenkov, A; Flier, J S; Maratos-Flier, E; Spiegelman, B M (Genes Dev, 2012)