{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T18:07:07Z","timestamp":1758823627254},"reference-count":16,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2011,1,12]],"date-time":"2011-01-12T00:00:00Z","timestamp":1294790400000},"content-version":"vor","delay-in-days":13160,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[1975,1]]},"abstract":"<jats:p><jats:bold>Abstract. <\/jats:bold> Uterine perforation in patients wearing the Copper\u2010T and the Copper\u20107 intrauterine contraceptive devices has been studied. In Bolln\u00e4s, Sweden, three perforations occurred in 1156 insertions of the Copper\u20107, and in New York, USA, six perforations occurred in 1153 insertions of the Copper\u2010T. Cervical perforation seems to be a special feature of the Copper\u2010T, while the Copper\u20107 tends to perforate through the uterine wall. The perforations can be divided into \u201cprimary\u201d perforations, related to the insertion procedure, and \u201csecondary\u201d perforations, caused by uterine contractions. The diagnosis and treatment of uterine perforations by intrauterine devices is discussed.<\/jats:p>","DOI":"10.3109\/00016347509156752","type":"journal-article","created":{"date-parts":[[2009,12,8]],"date-time":"2009-12-08T18:09:05Z","timestamp":1260295745000},"page":"183-189","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Recents Observations: Perforation of the Uterus by the Copper\u2010T and Copper\u20107 Intrauterine Contraceptive Devices"],"prefix":"10.1111","volume":"54","author":[{"given":"Lars L.","family":"Cederqvist","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bengt\u2010\u00c5ke","family":"Lindhe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fritz","family":"Fuchs","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,1,12]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"97","volume-title":"Advanced Concepts in Contraception","author":"Buchman M. 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