The pin-hole cervical os; a small fertility problem

Henk G. ter Brugge, Jan A.M. Kremer

In: European Journal of Obstetrics & Gynecology and Reproductive Biology · 1990 · vol. 37(3) , pp. 247–251 · doi:10.1016/0028-2243(90)90031-u · PMID:2227067 · W2068811822

article OA: bronze CC0

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⚙ AI-generated summary by claude@2026-06, 2026-06-13 ⓘ

This paper describes the pinhole cervical os, a morphological variation of the cervix that may contribute to infertility.

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License: CC0 · commercial use OK