title: Pharmacist substitution of slow-release products.
authors.forename: L
authors.initials: L
authors.lastname: Hendeles
mesh_terms: D003692:Delayed-Action Preparations; D010604:Pharmacy; D013806:Theophylline / Q000008:administration & dosage*; D013810:Therapeutic Equivalency
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline