Noted: Just apply a dab the size of a dime to the anal opening and create a thin smear, advises Arnold Wald, M.D., a professor of gastroenterology and hepatology at the University of Wisconsin-Madison.
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Noted: Just apply a dab the size of a dime to the anal opening and create a thin smear, advises Arnold Wald, M.D., a professor of gastroenterology and hepatology at the University of Wisconsin-Madison.