1. A prospective study comparing the efficacy and safety of two sublingual birch allergen preparations. Issue 1 (23rd July 2014) Authors: Klimek, Ludger; Sperl, Annette; van Twuijver, Esther; van Ree, Ronald; Kleinjans, Huub; Boot, Johan Diderik; Pfaar, Oliver Journal: Clinical and translational allergy Issue: Volume 4:Issue 1(2014) Page Start: n/a Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗