Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Background: Gastric atrophy (GA) and intestinal metaplasia (IM) are early stages in the development of gastric cancer. Evaluations are based on the Updated Sydney System, which includes a biopsy of ...

Blood clotting disorders can be inherited or acquired and lead to either excessive bleeding or too much clotting. Hypercoagulable disorders can cause dangerous blockages due to excessive blood ...

Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan Department of Plant & Environmental New Resources, College of Life ...

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