四川省内江市第六人民医院供应室；
YANG Xiaoli Department of Room Supply; The Sixth People's Hospital; Sichuan Neijiang 641001;
内江市东兴区疾病预防控制中心；
Dongxing Centerfor Disease Control and Prevention of Neijiang;
本文以四川盆地中部丘陵区的典型代表内江市为研究对象。
Neijiang city was selected as the research object, which was a typical regional case of central hill district of Sichuan basin.
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