Which hygiene claim is supported by research? A. There are no benefits to hand washing B. Regular professional teeth cleaning has no effect on dental health C. Brushing with a fluoride toothpaste has no effect on cavities D. Regular hand soap prevents disease just as well as antibacterial soap

Adouble-blinded trial for a new indication is conducted under an ind comparing two (2) marketed drugs, at twice the approved prescribed doses. on day 2, subject 603 had difficulty breathing. although it was life-threatening initially, subject 603 was treated and discharged directly from the emergency department after complete recovery. on day 5, subject 20 had a headache, which led to hospitalization and required blood pressure lowering medications. these episodes cannot be explained on the basis of the pharmacological property of either drug or the subjects' medical histories. the investigator would submit an sae report for