作者单位：Boston Biostatistics Research Foundation, Framingham, MA, United States[1]Division of Immunology and Rheumatology, Stanford University School of Medicine, Palo Alto, CA[2]Development Department, Research and Development Division, Seikagaku Corporation, 6-1, Marunouchi 1[3]The Center for Rheumatology and Bone Research, Wheaton, MD, United States[4]Biostatistics and Data Management Group, Clinical Development Department, Research and Development[5]
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