Protection against allergen-induced airway hyperresponsiveness (AHR) by olodaterol in guinea pigs is synergistically enhanced by tiotropium
Marieke Smit, Annet Zuidhof, Sophie Bos, Harm Maarsingh, Reinoud Gosens, Johan Zaagsma, Herman Meurs
European Respiratory Journal 2012 40: P2130; DOI: