The incidence of pharyngeal gonorrhea and rectal chlamydia in MSM who visited the Columbia Health Service was similar to rates of asymptomatic nonurethral gonorrhea and chlamydia in studies conducted in the MSM population in non-university settings. This suggests that, following the Centers for Disease Control and Prevention guidelines, 3-site testing for MSM seen at the Columbia clinic is indicated. NAAT is more sensitive than culture for nonurethral gonorrhea and chlamydia.
We outline a program, PRESS (PR__olog Equation Solving S_ystem) for solving symbolic, transcendental, non-differentlal equations. The methods used for solving equations are described, together with the service facilities. The principal technique, meta-level inference, appears to have applications in the broader field of symbolic and algebraic manipulation.
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