Antineoplastic Agents - therapeutic use, Esophageal Neoplasms - pathology, Carcinoma, Esophageal Neoplasms - mortality, Squamous Cell - therapy, Squamous Cell - pathology, Esophageal Neoplasms - therapy, Squamous Cell - mortality
Children's Health, Asthma - epidemiology, Pesticides - poisoning, Asthma - etiology, Asthma in children