Risk factors for cervical ectopic pregnancy: Systematic review of the literature and comparison with a control group of women at labor

1. Crespo, M.
2. de los Bueis, J.
3. Goikoetxea, E.
4. Malaina, I.
5. Laínz, L.
6. Expósito, A.
7. Matorras, R.