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RESULTS : In the 12 patients switched because of chronic nephrotoxicity there was a significant decrease in serum creatinine [ 233 + / - 34 to 210 + / - 56 micromol / liter ( P < 0 . 05 ) at 6 months ] .
 Disease: nephrotoxicity; Chemical: creatinine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: nephrotoxicity; Chemical: creatinine