The collection and keeping of data for a large number of diseases seen by the medical community and reportable to public health authorities is called .

Explain the pathophysiologic changes that can cause the signs and symptoms associated with common bile duct obstruction.

Rectangle pqrs has vertices p(1, 4), q(6, 4), r(6, 1), and s(1, 1). without graphing, find the new coordinates of the vertices of the rectangle after a reflection over the x-axis and then another reflection over the y-axis.

Opium, methamphetamine, and cocaine are in the united states.