1. Karadsheh Z, Sule S. 2013. Fecal transplantation for the treatment of recurrent Clostridium difficile infection. N Am J Med Sci 5:339–343.

Answer: Review Article

2. Lee CH, Steiner T, Petrof EO, Smieja M, Roscoe D, Nematallah A, Weese JS, Collins S, Moayyedi P, Crowther M, Ropeleski MJ, Jayaratne P, Higgins D, Li Y, Rau NV, Kim PT. 2016. Frozen vs fresh fecal microbiota transplantation and clinical resolution of diarrhea in patients with recurrent Clostridium difficile infection: A randomized clinical trial. JAMA 315:142–149.

Answer: Clinical Trial

3. Lichtman JS, Ferreyra JA, Ng KM, Smits SA, Sonnenburg JL, Elias JE. 2016. Host-microbiota interactions in the pathogenesis of antibiotic-associated diseases. Cell Rep 14:1049–1061.

Answer: Original/Primary Research

4. Popa D, Laszlo M, Ciobanu L, Ucenic E, Mihalache M, Pascu O. 2015. Self-administered home series fecal “minitransplants” for recurrent Clostridium difficile infection on a rectal remnant. J Gastrointestin Liver Dis 24:531–533.

Answer: Case Study

5. Schmidt C. 2013. The Startup Bugs. Nature Biotechnol 31:279–281.

Answer: News article/editorial