A peer-reviewed study based on a massive British database has linked long-term use of oral bisphosphonate drugs to a higher risk of esophageal cancer, contrary to a separate study of the same database released a few weeks ago that found no evidence of increased risk. The competing conclusions have reopened the debate about a class-wide cancer risk, and a label change for the popular osteoporosis agents could be on the table. Data from the U.K. General Practice Research Database, which has records...