To investigate whether a unifying quantitative guideline could exist for mutualistic systems, Wu systematically studied 52 differential equation models that capture the diversity of mutualistic systems.
During outbreaks, oral ribavirin is often considered for postexposure prophylaxis (PEP), but no systematically collected data exist for this indication of drug use (1 – 5 ).
The vast inventory of recorded information can be useful only if it is systematically organized and if mechanisms exist for locating in it items relevant to human needs.
Whatever hopes that may exist for an end to the "war on terror" are systematically destroyed by ongoing aggression.
Therefore, substantial incentives exist for healthcare systems, health insurers, and health plan purchasers to systematically include tobacco dependence treatment as a covered benefit.
Although viable parameter points exist for this model (Supplementary Fig. S5), the dynamics of the intracellular glutamine concentration is systematically underestimated (Fig. 3A).
First, it is difficult to systematically search for observational studies as search strategies that are both sensitive and specific do not exist for the major electronic databases.
Other procedures exist for that.
