All sampling plans were reviewed by WHO before implementation.
Before implementation of BF, some crucial problem should be taken fully into account.
Before implementation, 240 children presented with asthma and after implementation, 286 children presented.
Before implementation of video mobile calls in emergencies, issues of information security should be addressed.
Before implementation, test content is piloted on volunteer doctors who have no known FtP concerns.
Before implementation of a CD screening program, its acceptability to the population concerned should be addressed.
Before implementation, it was tested with a pilot feasibility study in 130 centres in 2005.
Before implementation in daily practice, confirmation of the results in other studies is needed.
Before implementation of screening programs, the experiences of those being identified as cases should be considered.
Before implementation on a large scale can be carried out, scientific support must be presented.
Before implementation of the computerized protocol, potassium replacement was physician-driven.
