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Phases of Clinical Research – ALS treatments
“The phases of clinical research are the stages in which scientists conduct experiments with a health intervention to obtain sufficient evidence for a process considered effective as a medical treatment.[1] For drug development, the clinical phases start with testing for safety in a few human subjects, then expand to many study participants (potentially tens of thousands) to determine if the treatment is effective.[1] Clinical research is conducted on drug candidates, vaccine candidates, new medical devices, and new diagnostic assays.”
https://en.wikipedia.org/wiki/Phases_of_clinical_research
Understanding the phases of clinical research
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