We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. A test-negative observational study design may be best ...

Developing treatments for rare diseases poses many unique challenges that cannot be addressed by traditional study designs. Small populations will result in prolonged enrolment periods and/or ...

Good experiments start with good planning. The analysis of genetic and molecular information involves increasingly sophisticated tools and methodologies, many of which are advancing at a fast pace.

Studies may be either observational or experimental. An experimental study is one in which the investigator deliberately intervenes so that it is possible to observe the effect of the intervention on ...

Big design-build infrastructure projects often turn out to be money-losers for design-build contractors, preventing contractors from covering their overhead, much less earning a profit, according to a ...