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Declaration of interest
In the past year, EM Lewiecki has received research grant support from Amgen, Eli Lilly and Merck. He has received consulting fees from Amgen, Eli Lilly, Merck, Radius Health, AgNovos Healthcare, Theranova, Alexion, NPS and AbbVie. The author has no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.