Proceedings of the National Academy of Sciences of the United States of America 2003 https://researcherprofiles.org/profile/1431445 12684537 Strain MC, Günthard HF, Havlir DV, Ignacio CC, Smith DM, Leigh-Brown AJ, Macaranas TR, Lam RY, Daly OA, Fischer M, Opravil M, Levine H, Bacheler L, Spina CA, Richman DD, Wong JK