Endpoint study
#1: Ulbricht, Catherine., Abrams, Tracee Rae., Conquer, Julie., Costa, Dawn., Serrano, Jill M. Grimes., Iovin, Ramon., Isaac, Richard., Nguyen, Yen., Rusie, Erica., Tran, Diem., Weissner, Wendy., Windsor, Regina C. An Evidence-Based Systematic Review of Umckaloabo (Pelargonium sidoides) by the Natural Standard Research Collaboration . journal of dietary supplements, 2010, vol. 7, no. 3, p. 283–302. DOI: 10.3109/19390211.2010.507116.
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