Ungar, Wendy J Effect of cost-sharing on use of asthma medication in children. [electronic resource] - Archives of pediatrics & adolescent medicine Feb 2008 - 104-10 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1538-3628 Standard No.: 10.1001/archpediatrics.2007.21 doi Subjects--Topical Terms: AdolescentAnti-Asthmatic Agents--economicsAsthma--drug therapyChildChild, PreschoolCost SharingDrug Therapy, CombinationDrug Utilization ReviewFemaleHumansInsurance Benefits--economicsInsurance Claim ReviewInsurance, Pharmaceutical Services--economicsMaleOntario--epidemiologyPrevalenceRegression AnalysisRetrospective Studies