Copyright: © 2003 Elsevier Ltd. Published by Elsevier Ltd. Great efforts and expense have been expended in attempts to detect genetic polymorphisms contributing to ...

Prior to the 20 th Century, one of the most common ways of seeing the world was through the lens of stratification, which is the idea that the natural world comes in different scales or layers. For ...

Correspondence to Dr R Scott Braithwaite, Department of Population Health, New York University School of Medicine, 227 E 30th St, Room 615, New York NY 10016, USA; scott.braithwaite{at}nyumc.org ...

Latin American and Caribbean sociological research on stratification has developed with the unavoidable reference to a background of deeply rooted inequalities, structuring differences, and ...

Racial and Ethnic Disparities in Cancer Survival: The Contribution of Tumor, Sociodemographic, Institutional, and Neighborhood Characteristics Minimal residual disease (MRD) and genetic abnormalities ...

Plant seeds go through a natural cycle without human intervention that allows them to detach themselves from the parent plant, weather through the winter, and germinate in the spring. The winter ...

Doubly-ranked (DR) stratification is a nonparametric, simple yet powerful method for instrument variable (IV) analysis and Mendelian randomization (MR) studies to create sub-groups, known as "strata", ...