Which birth control method can be used to prevent pregnancy after unprotected intercourse?
a.
female condom
b.
birth control patch
c.
emergency contraception

What is the code and any required modifier(s) for dipstick urinalysis, non-automated, without microscopy performed in a physician office for a medicare patient?

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.