{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T19:11:33Z","timestamp":1761765093951,"version":"build-2065373602"},"reference-count":32,"publisher":"BMJ","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Epidemiol Community Health"],"published-print":{"date-parts":[[1986,9]]},"abstract":"<jats:p>The month of birth of boys undergoing orchidopexy in the Oxfordshire Health District during the years 1974-83 was analysed. A significant seasonal variation with a peak in April was found for those boys operated upon by paediatric surgeons at a young age (0-4). Possible causes of this variation and its relationship to the aetiology of cryptorchidism are discussed.<\/jats:p>","DOI":"10.1136\/jech.40.3.210","type":"journal-article","created":{"date-parts":[[2008,11,12]],"date-time":"2008-11-12T15:09:01Z","timestamp":1226502541000},"page":"210-213","source":"Crossref","is-referenced-by-count":15,"title":["Seasonal variations in cryptorchidism."],"prefix":"10.1136","volume":"40","author":[{"given":"M B","family":"Jackson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A J","family":"Swerdlow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1986,9,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1093\/oxfordjournals.aje.a112989","article-title":"The epidemiology of testicular cancer in young adults","volume":"112","author":"Schottenfeld, D.; Warshauer, M.E.; Sherlock, S.; Zauber, A.G.; Leder, M.; Payne, R.","year":"1980","unstructured":"Schottenfeld D, Warshauer ME, Sherlock S, Zauber AG, Leder M, Payne R. 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