Children patients from Children Health Care Out-patient Clinic of Medical School of Qingdao University from June 2002 to March 2004 were in the LBW group. Children in the NBW group were randomly selected from city kindergarten.

  • 出生低体重儿组为2002-06/2004-03青岛大学医学院儿童保健门诊就诊患儿,出生正常体重儿组为随机抽取的市区幼儿园入园儿童。

  • 互联网摘选 2025-01-20 17:43:37

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