Metabolic changes in summer active and anuric hibernating free-ranging brown bears (Ursus arctos).
Stenvinkel P, Fr?bert O, Anderstam B, Palm F, Eriksson M, Bragfors-Helin AC, Qureshi AR, Larsson T, Friebe A, Zedrosser A, Josefsson J, Svensson M, Sahdo B, Bankir L, Johnson RJ. Metabolic changes in summer active and anuric hibernating free-ranging brown bears (Ursus arctos). PLoS One. 2013; 8(9):e72934.