Which audit initiative resulted in many teaching hospitals having to repay millions of dollars to the Medicare program because they lacked documentation to substantiate Medicare payments to faculty physicians who supervised residents??

In a normally functioning heart, the electrical impulses will originate from the:

a. SA node. b. AV node. c. bundle of His. d. Purkinje network.

A 16-year-old girl developed multiple recurrent fluid-filled lesions of the vermilion of her lower lip. This has happened before in the same site. She has no eye, genital, or cutaneous lesions. A cytology smear contained numerous multinucleated cells. The diagnosis is:

a. Pemphigus vulgaris b. Mucous membrane pemphigoid c. Lichen planus d. Aphthous stomatitis e. Herpes simplex infection