The Work Productivity and Activity Impairment Questionnaire for Patients with Gastroesophageal Reflux Disease (WPAI-GERD): Responsiveness to Change and English Language Validation

Author: Wahlqvist Peter  

Publisher: Adis International

ISSN: 1170-7690

Source: PharmacoEconomics, Vol.25, Iss.5, 2007-01, pp. : 385-396

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Abstract