Appropriateness of Testing for Anti–Tumor Necrosis Factor Agent and Antibody Concentrations, and Interpretation of Results

Gil Y. Melmed, Peter M. Irving, Jennifer Jones, Gilaad G. Kaplan, Patricia L. Kozuch, Fernando S. Velayos, Leonard Baidoo, Miles P. Sparrow, Brian Bressler, Adam S. Cheifetz, Shane M. Devlin, Laura E. Raffals, Niels Vande Casteele, Diane R. Mould, Jean Fred Colombel, Marla Dubinsky, William J. Sandborn, Corey A. Siegel