<qa>  Has a history of malabsorption, esophageal reflux, p8. Has current or recent within 6 months gastrointestinal disorder or gastrointestinal surgery except appendectomy that would be expected to influence the absorption of drugs and calcium ie, a history of malabsorption, esophageal reflux, peptic ulcer disease, erosive esophagitis, frequent more than once per week occurrence of heartburn, or any surgical intervention eg, cholecystectomy. 