1 Division of Rheumatology, Department of Internal Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN; Division of Rheumatology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. Electronic address: p.ungprasert@gmail.com.
2 Division of Rheumatology, Department of Internal Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN; Division of Biomedical Statistics and Informatics, Department of Health Science Research, Mayo Clinic College of Medicine and Science, Rochester, MN.
3 Division of Rheumatology, Department of Internal Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN; Division of Epidemiology, Department of Health Science Research, Mayo Clinic College of Medicine and Science, Rochester, MN.