According to the pathogenic time 7 d, 14 d, 30 d, 60 d and over 60 d they were divided into five groups, and to test the urine minium albumen, urine routine, 24 h volune of urine albumin, 12 h urine addis count and index of immunology.

• 按发病时间60d进行临床分组(A、B、C、D、E组)；并进行尿微量蛋白、尿常规、24小时尿蛋白定量、12小时尿液addis计数、免疫学指标的检查。