title: Persistence in Open and Closed Data Sources: A Study of Fingolimod Verse Interferons/Glatiramer Acetate in Patients with Multiple Sclerosis.
authors.affiliation: Novartis Pharma AG, Basel, Switzerland.
authors.forename: R
authors.initials: R
authors.lastname: Lahoz
authors.affiliation: Novartis Pharma AG, Basel, Switzerland.
authors.forename: N
authors.initials: N
authors.lastname: Bergvall
authors.affiliation: Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA.
authors.forename: T
authors.initials: T
authors.lastname: Nazareth
authors.affiliation: IMS Health, Waltham, MA, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Korn