5409
During chronic treatment , when plasma concentrations fluctuated between 23 . 5 ng . ml - 1 at 8 h and 14 ng . ml - 1 at 24 h post - dosing , ST segment depression at an individually comparable workload was significantly decreased by 28 % compared with placebo ( P < 0 . 005 ) at both points in time .
 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