1966
OBJECTIVE : To report the finding of squamous metaplasia within endometrial glands occurring as a result of progestin therapy of hyperplasia .
 squamous metaplasia within endometrial glands, progestin
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 squamous metaplasia within endometrial glands, progestin