Biological and chemical evaluation of anti-TB coumarins from the polypore mushroom, Fomitopsis officinalis - Hwang, CH; Jaki, BU; Klein, LL; Lankin, DC; McAlpine, J; Napolitano, JG; Franzblau, SG; Cho, SH; Stamets, PE; Pauli, GF (Planta Medica, 2012)