871
RESULTS : The mean hemoglobin ( Hb ) levels were significantly declined in all patients from baseline of 14 . 2 g / dl to 14 . 0 g / dl , 13 . 5 g / dl , 13 . 2 g / dl and 12 . 7 g / dl at 1 , 2 , 3 and 6 months post - CAB , respectively .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities:  
Answer:
 None