1067
SELECTION CRITERIA : Randomised double - blind trials of HT ( oestrogens with or without progestogens ) versus placebo , taken for at least one year by perimenopausal or postmenopausal women .
 Chemical: oestrogens; Chemical: progestogens
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:
 Chemical: oestrogens; Chemical: progestogens