MedLinePlus http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm Stool-C. difficile testing http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm http://www.nlm.nih.gov/medlineplus/ency/article/003590.htm