Placebos without Deception: A Randomized Controlled Trial in Irritable Bowel Syndrome Kaptchuk, Ted J. ; Friedlander, Elizabeth ; Kelley, John M. ; Sanchez, M. Norma ; Kokkotou, Efi ; Singer, Joyce P. ; Kowalczykowski, Magda ; Miller, Franklin G. ; Kirsch, Irving ; Lembo, Anthony J. Abstract Publication: PLoS ONE Pub Date: December 2010 DOI: 10.1371/journal.pone.0015591 Bibcode: 2010PLoSO...515591K