Cohort, cross sectional, and case-control studies are collectively referred to as observational studies. Often these studies are the only practicable method of studying various problems, for example, ...

If the number of patients enrolled is lower than expected, based on the required sample size, then the reliability of the study results and their validation tend to be impaired ... and the former are ...

The current study evaluated the relationship between bicycle commuting, among working or studying adults in a dense urban setting, and perceived stress. Methods A cross-sectional study was performed ...

Design A cross-sectional study comparing medication safety letters issued for the purpose of alerting healthcare providers to newly identified medication problems associated with medications already ...

Brain samples contained 10 times more microplastics than other organs. The brain may contain higher -- and more significant -- amounts of microplastics than other organs in the body, according to ...

The research offers hope to tens of thousands of patients with kidney failure who are on a long waiting list for an organ ... these studies could lead to the broader use of cross-species ...

This research topic explores the critical and unresolved questions surrounding the use of normothermic regional perfusion (NRP), normothermic machine perfusion (NMP), and hypothermic machine perfusion ...

Abstract: In this paper, we present a layered cross-correlation back-projection method based on ray-theory (LCBP) for electro-magnetic imaging in stratified medium. To argue the challenge of resolving ...

The U.S. Food and Drug Administration has given the green light to two biotechnology companies for clinical trials that will transplant organs ... studies could lead to the broader use of cross ...

The brain may contain higher -- and more significant -- amounts of microplastics than other organs in the body, according to a new study. Researchers from the University of New Mexico Health ...