Associations between prescription copayment levels and β-blocker medication adherence in commercially insured heart failure patients 50 years and older.
Patterson, Mark E, Susan J Blalock, Andrew J Smith, and Michael D Murray. 2011. “Associations Between Prescription Copayment Levels and β-Blocker Medication Adherence in Commercially Insured Heart Failure Patients 50 Years and Older.”. Clinical Therapeutics 33 (5): 608-16.