<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-13T13:43:27Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2445/174098" metadataPrefix="mets">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2445/174098</identifier><datestamp>2025-12-06T04:08:11Z</datestamp><setSpec>com_2072_1057</setSpec><setSpec>col_2072_478798</setSpec><setSpec>col_2072_478916</setSpec><setSpec>col_2072_478917</setSpec></header><metadata><mets xmlns="http://www.loc.gov/METS/" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" ID="&#xa;&#x9;&#x9;&#x9;&#x9;DSpace_ITEM_2445-174098" TYPE="DSpace ITEM" PROFILE="DSpace METS SIP Profile 1.0" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd" OBJID="&#xa;&#x9;&#x9;&#x9;&#x9;hdl:2445/174098">
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                  <mods:namePart>Martínez Sánchez, Jose M.</mods:namePart>
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                  <mods:namePart>Ballbè i Gibernau, Montse</mods:namePart>
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                  <mods:namePart>Pérez Ortuño, Raúl</mods:namePart>
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                  <mods:namePart>Fu Balboa, Marcela</mods:namePart>
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               <mods:name>
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                  <mods:namePart>Sureda, Xisca</mods:namePart>
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                  <mods:namePart>Pascual, José Antonio</mods:namePart>
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               <mods:name>
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                  <mods:namePart>Peruga, Armando</mods:namePart>
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               <mods:name>
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                  <mods:namePart>Fernández Muñoz, Esteve</mods:namePart>
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                  <mods:dateIssued encoding="iso8601">2021-02-19T11:34:01Z2021-02-19T11:34:01Z2019-11-012021-02-19T11:34:02Z</mods:dateIssued>
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               <mods:abstract>Objective: to assess the levels of a tobacco-specific nitrosamine (NNAL) in non-smokers passively exposed to the second-hand aerosol (SHA) emitted from users of electronic cigarettes (e-cigarettes). Method: we conducted an observational study involving 55 non-smoking volunteers divided into three groups: 25 living at home with conventional smokers, 6 living with e-cigarette users, and 24 in control homes (smoke-free homes). We obtained urine samples from all volunteers to determine NNAL. Results: we detected NNAL in the urine of volunteers exposed to e-cigarettes (median:0.55 pg/mL; interquartile range: 0.26-2.94 pg/mL). The percentage of urine samples with quantifiable NNAL differed significantly among the three groups of homes: 29.2%, 66.7% and 76.0%, respectively (p=0.004). Conclusions: we found NNAL nitrosamine in urine samples from people exposed to SHA from e-cigarettes. However, these results could be confirmed with more studies with larger sample sizes.</mods:abstract>
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               <mods:accessCondition type="useAndReproduction">cc-by-nc-nd (c) Sociedad Española de Salud Pública y Administración Sanitaria (SESPAS), 2019 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess</mods:accessCondition>
               <mods:subject>
                  <mods:topic>Cigarretes electròniques</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Marcadors bioquímics</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Nitrosamines</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Electronic cigarettes</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Biochemical markers</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Nitrosoamines</mods:topic>
               </mods:subject>
               <mods:titleInfo>
                  <mods:title>Secondhand exposure to aerosol from electronic cigarettes: pilot study of assessment of tobacco-specific nitrosamine (NNAL) in urine</mods:title>
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               <mods:genre>info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion</mods:genre>
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