Reviewer’s report
Title: 
Intrauterine Devices Migrated into the Bladder Two case reports and
literature review
Version: 
0 
Date: 
14 Apr 2021
Reviewer's report:
1. For the first case, the author should explain the delivery method of the two
children and whether to perform cesarean section.
2. For the second patient, the author should explain: (1) The pregnancy and
delivery before the IUD was placed, whether she had a cesarean section; (2) Did
she had a color Doppler ultrasound examination during the last pregnancy? 
if
Yes, was there any indication that there is a residual IUD in the uterus or in the
bladder; (3) the delivery method of the last pregnancy.
3. Is the type of IUD also related to the risk of IUD moving to the bladder? It
should be discussed.
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