Comparison of Two Theory-Based, Fully Automated Telephone Interventions Designed to Maintain Dietary Change in Healthy Adults: Study Protocol of a Three-Arm Randomized Controlled Trial

Julie A Wright   ^{1, 2} , PhD ;   Lisa M Quintiliani   ² , RD, PhD ;   Gabrielle M Turner-McGrievy   ³ , RD, PhD ;   Jeffrey P Migneault   ⁴ , PhD ;   Timothy Heeren   ⁵ , PhD ;   Robert H Friedman   ² , MD

¹ Department of Exercise and Health Sciences, University of Massachusetts Boston, Boston, MA, United States

² Medical Information Systems Unit, Section of General Internal Medicine, Boston University School of Medicine, Boston, MA, United States

³ Department of Health Promotion, Education, and Behavior Discovery, Arnold School of Public Health, University of South Carolina, Columbia, SC, United States

⁴ Warren Alpert Medical School, Brown University, Providence, RI, United States

⁵ Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States