2870
A multicentre study involving 9 Italian institutions was carried out to compare the efficacy and safety of ranitidine 150 mg b . i . d . and ranitidine 300 mg nocte in the treatment of reflux oesophagitis .
 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