Patterns of urinary cortisol levels during ontogeny appear population specific rather than species specific in wild chimpanzees and bonobosTkaczynski, Patrick J; Behringer, Verena; Ackermann, Corinne Y; Fedurek, Pawel; Fruth, Barbara; Girard-Buttoz, Cédric; Hobaiter, Catherine; Lee, Sean M; Löhrich, Therese; Preis, Anna; Samuni, Liran; Zommers, Zinta; Zuberbühler, Klaus; Deschner, Tobias; Wittig, Roman M; Hohmann, Gottfried; Crockford, Catherine. Journal of human evolution, 2020-10, Vol.147, p.102869-102869