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What is Approximate number of patients recruited in phase II clinical trials of a drug are? and explain in detail?
Phase Name Conducted on I Human Pharmacology and safety Healthy Volunteers II Therapeutic Exploratory (20-200) patients III Therapeutic Confirmatory Upto 5000 patients from several centres IV Post-Marketing Surveillance Large number of patients 0 (ZERO) Microdosing studies Healthy volunteers (Small numbers)