This is a preview. Log in through your library . Abstract Background: Heckman-type selection models have been used to control HIV prevalence estimates for selection bias when participation in HIV ...

In this article, we derive second-order necessary conditions of optimality for an abstract optimization problem with equality and inequality constraints and constraints in the form of an inclusion ...

Non-parametric tests are used when standard assumptions are not available. These tests don’t rely on distributions, often ...

Meta-analysis is a commonly used approach to increase the sample size for genome-wide association searches when individual studies are otherwise underpowered. Here, we present a meta-analysis ...