يعرض 41 - 60 نتائج من 24,116 نتيجة بحث عن '(( 50 ((ppm decrease) OR (nn decrease)) ) OR ((( 19 a decrease ) OR ( 10 ng decrease ))))', وقت الاستعلام: 0.50s تنقيح النتائج
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    Prevalence of smoking during COVID19 (n = 1844). حسب Mahmoud A. Alomari (14780446)

    منشور في 2023
    "…</p><p>Conclusions</p><p>Changes in the SH during COVID-19 have been reported in about 50% of participants who smoke tobacco, with a more reported decrease than increase in use. …"