1 a Section of Rheumatology, VA New York Harbor Health Care System, New York, USA and Division of Rheumatology, the Crystal Diseases Study Group, New York University School of Medicine , New York , USA.
2 b Division of Rheumatology , Duke University School of Medicine , Durham , North Carolina , USA.
3 c Section of Gastroenterology , VA New York Harbor Health Care System , New York Campus, New York , USA.