Usage patterns of oral H1-antihistamines in 10 European countries: A study using MASK-air® and Google Trends real-world data oleh Rafael José Vieira, MD, Bernardo Sousa-Pinto, MD PhD, Josep M. Anto, MD PhD, Aziz Sheikh, MD PhD, Ludger Klimek, MD PhD, Torsten Zuberbier, MD PhD, João Almeida Fonseca, MD PhD, Jean Bousquet, MD PhD