1. Division of Nephrology, Department of Medicine, Chulalongkorn University, Rama IV, Bangkok, Thailand
2. Division of Nephrology, Department of Medicine, Chulalongkorn University, Rama IV, Bangkok, Thailand; Lupus Research Unit, Chulalongkorn University, Rama IV, Bangkok, Thailand,
3. Department of Pathology, Faculty of Medicine, Chulalongkorn University, Rama IV, Bangkok, Thailand
4. Nopparat Rachathani Hospital, Ministry of Public Health, Bangkok, Thailand