This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'True for Phase IV of clinical trials: March 2012 \nSelect and explain. \nA. Done for paediatric drugs, B. Done for rare drugs, C. After-marketing surveillance of drugs, D. Human pharmacology and safety', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: C i.e. After-marketing surveillance of drugs Phases of clinical trial Phase IV of clinical trial is post marketing surveillance (data collected about the efficacy, acceptability and adverse effects of the drug). Fuher therapeutic trials involving special groups like children, elderly, pregnant/ lactating women, patients with renal/hepatic diseases etc.(which are generally excluded from clinical trials) may be undeaken at this stage Phase I of clinical trial is human pharmacology and safety', 'role': 'assistant'}]