1681
Of 848 patients , 819 cases with complete description of patient ' s background were evaluable : Group A ( surgery + MMC + 5 - FU : chemotherapy ) 253 cases , group B ( surgery + MMC + 5 - FU + OK - 432 or PSK : immunochemotherapy ) 282 and group C ( surgery alone ) 284 .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None