Which of the following is NOT a risk factor for ectopic pregnancy?

e. Risk factors for developing an ectopic pregnancy include:

• Pelvic inflammatory disease.

• Pelvic surgery/adhesions.

• Previous ectopic pregnancy.

• Endometriosis.

• Assisted fertilisation.

• IUCD.

• Progesterone-only pill.

• Congenital anatomical variants.

• Ovarian/uterine cysts and tumours.

Although previous Caesarean section may result in development of adhesions it is not in itself responsible for future progression onto an ectopic pregnancy.