The answer to your question is false
Answer: (C) Was an English anesthesiologist who used natural experiments.
Explanation:
John snow was an English anesthesiologist and he accomplishment in the anesthesia, medicine and in the epidemiology.
Dr john snow set up the series for using the natural experiments. He is also known as the father of the modern epidemiology.
He basically believe that the sewage dump into the rivers near the town can cause the cholera outbreak. In 1854, he investigated the reason of out break and also proves his theory in the Soho, London. He also leader of the development of the medical hygiene and the anesthesia.
<span>HIV antibody tests look for these antibodies to HIV in your blood or oral fluid. The soonest an antibody test will detect infection is 3 weeks. Most (approximately 97%), but not all, people will develop detectable antibodies within 3 to 12 weeks (21 to 84 days) of infection</span>
