Bisphosphonates and nonhealing femoral fractures: is there (a) safety (signal) in numbers?: commentary on an article by Beatrice J. Edwards, MD, MPH, et al.: "bisphosphonates and nonhealing femoral fractures: analysis of the FDA Adverse Events Reporting System (FAERS) and international safety efforts. a systematic review from the Research on Adverse Drug Events And Reports (RADAR) project". Article