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Among women with cardiovascular disease , long - term use of combined continuous HT significantly increased the risk of venous thrombo - embolism . One trial analysed subgroups of 2839 relatively healthy 50 to 59 year old women taking combined continuous HT and 1637 taking oestrogen - only HT , versus similar - sized placebo groups .
 Disease: cardiovascular disease; Disease: venous thrombo - embolism; Chemical: oestrogen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: cardiovascular disease; Disease: venous thrombo - embolism; Chemical: oestrogen