Reply to Gilbert Meilaender, "Revisiting the Cloning Debate [Letter]," 300 (27 June 2003), 2031-2032.
Cynthia B. Cohen and LeRoy Walters, "Gene Transfer for Therapy or Enhancement," in David H. Smith and Cynthia B. Cohen, eds., (Lanham, MD: Rowman & Littlefield, 2003), 53-74.
"Afterword: The Birth and Youth of the Kennedy Institute of Ethics," in Jennifer K. Walter and Eran P. Klein, eds., (Washington, DC: Georgetown University Press, 2003), pp. 215-231.
"Genforschung und Gesellschaft: Erwartungen, Ziele und Grenzen," in Ludger Honnefelder, et al., eds., (Berlin: Walter de Gruyter, 2003), pp. 152-166.
, Co-Editor with Tamar Joy Kahn and Doris Mueller Goldstein (Washington, D.C.: Kennedy Institute of Ethics, Georgetown University, 2003).
"The United Nations and Human Cloning: A Debate on Hold," 34 (January-February 2004), 5-6.
"Human Embryonic Stem Cell Research: An Intercultural Perspective," 14 (March 2004), 3-38.
"John C. Fletcher – 1931-2004 [tribute]," 14 (2004), vii-viii.
, Co-Editor with Tamar Joy Kahn and Doris Mueller Goldstein (Washington, D.C.: Kennedy Institute of Ethics, Georgetown University, 2004).
"Human Genetic Intervention: Past, Present, and Future," in Harold W. Baillie and Timothy K. Casey, eds., (Cambridge, MA: MIT