{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T12:30:52Z","timestamp":1777897852540,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,11,25]],"date-time":"2008-11-25T00:00:00Z","timestamp":1227571200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,11,25]],"date-time":"2008-11-25T00:00:00Z","timestamp":1227571200000},"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>There is concern about noise exposure in the hospital environment and its effects on infants. Stress reactions, however, are difficult to measure, especially in this age group. Urinary T&lt;sub&gt;4&lt;\/sub&gt; and T&lt;sub&gt;3&lt;\/sub&gt; have proved to be equivalent to catecholamine determinations in helicopter pilots and in motion sickness. They represent the free fraction of thyroid hormones in serum. Timed collections of urine were made in 78 healthy infants and in 43 infants exposed to standardized noise. T&lt;sub&gt;4&lt;\/sub&gt; and T&lt;sub&gt;3&lt;\/sub&gt; were determined by RIA on Sephadex columns. Medians and ranges are given for day and night and before, during and after noise exposure.<\/jats:p>","DOI":"10.1159\/000179485","type":"journal-article","created":{"date-parts":[[2008,11,29]],"date-time":"2008-11-29T09:20:02Z","timestamp":1227950402000},"page":"56-60","source":"Crossref","is-referenced-by-count":1,"title":["Urinary Free T\n                    <sub>4<\/sub>\n                    and T\n                    <sub>3<\/sub>\n                    in Healthy Infants and during Noise Exposure"],"prefix":"10.1159","author":[{"given":"Wolfgang","family":"von Petrykowski","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ines Welbers","family":"de Liddle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ludwig","family":"Kapitel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roland","family":"G\u00e4deke","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2008,11,25]]},"container-title":["Hormone Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000179485","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T09:14:05Z","timestamp":1777626845000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000179485"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,11,25]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000179485","archive":["Portico"],"relation":{},"ISSN":["0301-0163","1423-0046"],"issn-type":[{"value":"0301-0163","type":"print"},{"value":"1423-0046","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,11,25]]}}}