Incorporating ethical principles into clinical research protocols: a tool for protocol writers and ethics committees.

Li RH, Wacholtz MC, Barnes M, Boggs L, Callery-D'Amico S, Davis A, Digilova A, Forster D, Heffernan K, Luthin M, Lynch HF, McNair L, Miller JE, Murphy J, Van Campen L, Wilenzick M, Wolf D, Woolston C, Aldinger C, Bierer BE.