Subcutaneous Allergen Immunotherapy With Thermosensitive Hydrogel and Recombinant Birch Pollen Allergen Variant, a Randomised Controlled Trial - Anna Nilson; Patricia Couroux; Jaana Haka; Silja Halme; Pekka Mattila; R. J. Joost van Neerven; Rolien Pels‐Rijcken; Janneke Ruinemans‐Koerts; Yvonne Schmidt‐Hieltjes; Anne Marie Salapatek; Kati Sallinen; Kristiina Takkinen; et al. (Clinical & Experimental Allergy, 2026)