A rapid decrease in kidney function was defined as a decrease in estimated glomerular filtration rate (GFR) of at least 6 mL/min per 1.73 m per year.

• 以后每4个月.；肾脏功能的快速减退被界定为一种评估肾小球滤过率(GFR)的下降，至少为6毫升/每分钟1