Assessment of Patient Satisfaction with a Formulary Switch from Omeprazole to Lansoprazole in Gastroesophageal Reflux Disease Maintenance TherapyByLaura J. Condra, PharmD,Anthony P. Morreale, PharmD, BCPS, MBA,Stephen N. Stolley, PharmD, BCPS,David Marcus, RPhMay 1st 1999