HATRIC: a study of Pelargonium sidoides root extract EPs®7630 (Kaloba®) for the treatment of acute cough due to lower respiratory tract infection in adults—study protocol for a double blind, placebo-controlled randomised feasibility trial
2011 ◽
Vol 38
(1)
◽
pp. 112-118
◽
2011 ◽
Vol 38
(1)
◽
pp. 119-125
◽
2010 ◽
Vol 65
(11)
◽
pp. 2472-2478
◽