RT Journal Article SR Electronic T1 Principles for Human Gene Therapy Studies JF Science JO Science FD American Association for the Advancement of Science SP 2163 OP 2165 DO 10.1126/science.287.5461.2163 VO 287 IS 5461 A1 Friedmann, Theodore YR 2000 UL http://science.sciencemag.org/content/287/5461/2163.abstract