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Serum concentrations of total cholesterol , triglycerides , low - density lipoprotein cholesterol and high - density lipoprotein cholesterol , together with anthropometric parameters and high - sensitivity C - reactive protein were measured before and after each treatment period .
 cholesterol, triglycerides, cholesterol, cholesterol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 cholesterol, triglycerides, cholesterol, cholesterol