PGI19 OBJECTIVE MEASUREMENT OF PRODUCTIVITY WHILE AT WORK IN US EMPLOYEES WITH AND WITHOUT GASTROESOPHAGEAL REFLUX DISEASE
Abstract
Authors
P Wahlqvist R Brook S Campbell MA Wallander N Kleinman I Wiklund J Smeeding
P Wahlqvist R Brook S Campbell MA Wallander N Kleinman I Wiklund J Smeeding
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