{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T02:05:29Z","timestamp":1785895529730,"version":"3.56.0"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,12,2]],"date-time":"2008-12-02T00:00:00Z","timestamp":1228176000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,12,2]],"date-time":"2008-12-02T00:00:00Z","timestamp":1228176000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Horm Res"],"abstract":"<jats:p>A total of 3,559 boys were examined for cryptorchidism over a 2-year period. At birth, 5.9 % (210\/3,534) had one or both testes undescended and at 3 months of age 1.61 % (57\/3,534) still had an undescended testis. These figures represent an increase in undescended testis of 40% at birth and 68% at 3 months when compared with figures collected in a similar study in the late 1950s. This increase in cryptorchidism still does not account for the increased number of orchiopexies being performed. Low birthweight was also found to be a risk factor for the presence of an undescended testis.<\/jats:p>","DOI":"10.1159\/000181052","type":"journal-article","created":{"date-parts":[[2008,12,5]],"date-time":"2008-12-05T13:14:51Z","timestamp":1228482891000},"page":"153-156","source":"Crossref","is-referenced-by-count":45,"title":["The Epidemiology of Cryptorchidism"],"prefix":"10.1159","author":[{"given":"M.B.","family":"Jackson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2008,12,2]]},"container-title":["Hormone Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000181052","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T09:19:42Z","timestamp":1777627182000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000181052"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,12,2]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000181052","archive":["Portico"],"relation":{},"ISSN":["0301-0163","1423-0046"],"issn-type":[{"value":"0301-0163","type":"print"},{"value":"1423-0046","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,12,2]]}}}