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The serum creatinine levels of patients in the mild - type chronic FK506 nephropathy group , which included 7 episode biopsies , were statistically higher than those in the minimum - type chronic FK506 - nephropathy group ( P < 0 . 001 ) .
 creatinine, FK506, nephropathy, FK506, nephropathy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 creatinine, FK506, nephropathy, FK506, nephropathy