A focused search identifies three studies that disprove the theory of a causal relationship between autism and vaccines.

A search of the literature does not support using beta-blocker therapy in patients at lower risks for cardiac events prior to noncardiac surgery.

A search of the literature found that patients who wish to avoid hormone replacement therapy are not likely to find relief of their symptoms with this alternative.

A search of the medical literature turned up three studies in which the benefits of treating hypertension in persons 80 years and older was demonstrated.

The conventional initial treatment for women who have infertility due to PCOS has been clomiphene. Do recent studies suggest that metformin is more effective?

A 26-year-old woman presents for a routine prenatal visit. She is a primigravida, 34 weeks pregnant, and has been healthy throughout her pregnancy. She has never smoked and stopped social alcohol use before conception. The patient is currently taking prenatal vitamins. She has no known allergies. Her vital signs are within normal limits, and her physical examination findings are all normal.

A 56-year-old woman, a nonsmoker, presents to your office seeking better control of her type 2 diabetes mellitus (DM). The diagnosis was made 6 years ago.

A 32-year-old nonsmoking female migraineur presents to your primary care office seeking more effective abortive treatment for her migraines. She is having one to two headaches per month that are only partially relieved by NSAIDs. Each headache lasts 2 to 3 days and negatively impacts her ability to work and to care for her two children. She is currently asymptomatic. Her medical history is negative for diabetes mellitus, hypertension, and dyslipidemia.