Primary Sjögren's syndrome as a systemic disease: A study of participants enrolled in an international Sjögren's syndrome registry

Arundathi S. Malladi, Kenneth E. Sack, Stephen C. Shiboski, Caroline H. Shiboski, Alan N. Baer, Ratukondla Banushree, Yi Dong, Pekka Helin, Bruce W. Kirkham, Mengtao Li, Susumu Sugai, Hisanori Umehara, Frederick B. Vivino, Cristina F. Vollenweider, Wen Zhang, Yan Zhao, John S. Greenspan, Troy E. Daniels, Lindsey A. Criswell