3791
Serum ascorbic acid had an inverse and the strongest association with systolic blood pressure among the risk factors including blood pressure , total cholesterol , triglyceride , gamma - GTP and obesity .
 gamma - GTP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 gamma - GTP