1574
Twenty male volunteers were studied during almokalant infusion aiming at plasma concentrations ( Cpl ) of 20 , 50 , 100 , and 150 nmol / l .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None