From uptodate.com - reliable source in medical information:

• https://www.uptodate.com/contents/colposcopy-beyond-the-basics

 

From the American College of Obstetricians and Gynecologists (ACOG):

• https://www.acog.org/patient-resources/faqs/special-procedures/colposcopy

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From the Society of Obstetricians and Gynecologists of Canada (SOGC):

• https://www.sexandu.ca/