Zhancheng Yao

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n engl j med 374;6 nejm.org February 11, 2016 596 The authors reply: Gaylis et al. accurately describe what happens when PSA testing is curtailed, but they confuse trends in PSA levels, cancer grade, and stage distribution with evidence of the efficacy of screening. Screening tests should find disease earlier. Unfortunately, for many men with high-grade(More)
OBJECTIVE To investigate the efficacy of anti-hepatitis B virus (HBV) drugs for preventing vertical transmission of HBV and the safety of these drugs when given as treatment during pregnancy (to women) or insemination (to men). METHODS Cases of women and men who had taken anti-HBV drug therapy during pregnancy or insemination, respectively, were(More)
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