JAMA | The Latest Medical Research, Reviews, and Guidelines 中文 关注 美国45至49岁成年人结直肠癌筛查趋势 这项研究评估了45至49岁成年人结直肠癌筛查采纳率的变化。 Trends in Colorectal Cancer Screening in US Adults Aged 45 to 49 Years jamanetwork.com