775
During an observation period of 12 weeks after halving atenolol from a mean dose of 82 mg to 41 mg , no significant changes in systolic and diastolic blood pressure or in response rate ( defined as a diastolic blood pressure of 95 mm Hg or less ) were observed .
 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