Examlex
Define external validity in research design. Describe in detail one threat to the external validity of a research study. Be sure to specify how that characteristic is a threat to external validity.
Prescription
An authorization given by a licensed healthcare professional that allows a patient to be provided with a medicine or treatment.
Narcotic
Substances that change mood or behavior and can potentially lead to dependence or abuse; often used for pain relief.
Ointment
A semi-solid preparation typically used topically for the delivery of medication or for protective, therapeutic, or cosmetic purposes.
Parenteral
Other than by mouth.
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