*Agbabiaka T.B., Guo R., Ernst E. Pelargonium sidoides for acute bronchitis: a systematic review and meta-analysis. Phytomedicine, 2008, 15(5), 378-85 | *Agbabiaka T.B., Guo R., Ernst E. Pelargonium sidoides for acute bronchitis: a systematic review and meta-analysis. Phytomedicine, 2008, 15(5), 378-85 |