Exposure to environmental tobacco smoke and respiratory tract infections in pre-school children – a cross-sectional study in Poland Journal title: Annals of Agricultural and Environmental Medicine Authors: Dorota Bielska, Donata Kurpas, Aneta Nitsch-Osuch, Ewa Gomółka, Elżbieta Ołdak, Sławomir Chlabicz,... Subject(s): Environmental Sciences, Agricultural Science
