Schapowal, A. (2002). Randomised controlled trial of butterbur and cetirizine for treating seasonal allergic rhinitis. BMJ.
Chicago Stili AlıntıSchapowal, Andreas. Randomised Controlled Trial of Butterbur and Cetirizine for Treating Seasonal Allergic Rhinitis. BMJ, 2002.
MLA AlıntıSchapowal, Andreas. Randomised Controlled Trial of Butterbur and Cetirizine for Treating Seasonal Allergic Rhinitis. BMJ, 2002.
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