<prompt> The risk factors of acute pelvic inflammatory disease PID are the following except :Menstruating teenagers who have multiple sex panerslUD usersWomen with monogamous paner who had vasectomyPrevious history of acute PID  <response>: Risk factors of acute PID Menstruating teenagers Multiple sexual paners Absence of contraceptive pill use Previous history of acute PID IUD users Area with prevalence of STDs D.C.DUTTA;S TEXTBOOK OF GYNAECOLOGY,Pg no:128,6th edition 