hiː wʌz vˈaɪstʃˈɛɹmən ʌvðə nˈæʃənəl tˈæsk fˈoːɹs ˌɔn ˈɔːɹɡən tɹænsplɐntˈeɪʃən, ænd hiː hɐz ˈɔːlsoʊ sˈɜːvd ɔnðə bˈoːɹd ʌv dᵻɹˈɛktɚz ʌvðə juːnˈaɪɾᵻd nˈɛtwɜːk fɔːɹ ˈɔːɹɡən ʃˈɛɹɪŋ ˈuːnoʊz, ðɪ ˈuːnoʊz ˈɛθɪks kəmˈɪɾi, ðə ɹˌiːkˈɑːmbɪnənt dˌiːˌɛnˈeɪ ɐdvˈaɪzɚɹi kəmˈɪɾi, ðə hjˈuːmən dʒˈiːn θˈɛɹəpi sˈʌbkəmˌɪɾiː, ðə bˌaɪoʊmˈɛdɪkəl ˈɛθɪks ɐdvˈaɪzɚɹi kəmˈɪɾi, ænd sˈɛvɹəl dˈeɪɾə ænd sˈeɪfti mˈɑːnɪɾɚɹɪŋ bˈoːɹdz fɔːɹ ˌɛnˌaɪˈeɪtʃ klˈɪnɪkəl tɹˈaɪəlz.
He was vice-chairman of the national Task Force on Organ Transplantation, and he has also served on the board of directors of the United Network for Organ Sharing (UNOS), the UNOS Ethics Committee, the Recombinant DNA Advisory Committee, the Human Gene Therapy Subcommittee, the Biomedical Ethics Advisory Committee, and several Data and Safety Monitoring Boards for NIH clinical trials.