Human subject research is a systematic investigation that can be either research or clinically oriented and involves the use of human subjects in any capacity. Systematic investigation incorporates both the collection and analysis of data in order to answer a specific question. Examples of research oriented investigation include surveys, questionnaires, interviews, and focus groups.
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American scientists conducted a study that showed that gastroesophageal reflux disease, one of the manifestations of which is heartburn, is associated with a high risk of developing cancer of the larynx and...