8. Fisher FM, Kleiner S, Douris N, Fox EC, Mepani RJ, Verd-equer F, Wu J, Kharitonenkov A, Flier JS, Maratos-Flier E, Spiegelman BM. FGF21 regulates PGC-1a and browning of white adipose tissues in adaptive thermogenesis. Genes Dev 2012; 26:271-81.