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METHODS : Using the General Practice Research Database we conducted a cohort analysis and case - control study nested within a population of women aged between 15 and 39 years with acne , hirsutism or PCOS to estimate the risk of VTE associated with CPA / EE .
 acne, hirsutism, PCOS, VTE, CPA, EE
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 acne, hirsutism, PCOS, VTE, CPA, EE