ABSTRACT
A nonsteroidal anti-inflammatory drug that works by inhibiting the COX-2 enzyme. Trade name: Bextra.
The concordance between the value of a measurement and the true value. A high reproducibility is a prerequisite for validity but does not automatically imply validity. With regard to the validity of the results of epidemiological studies, a distinction is made between internal and external validity.
An essential amino acid (see Table 5).
