Nat. Med. 12, 342–347; 2006; published online 12 February 2006; corrected after print 19 April 2006

In the version of this article originally published, Pradip Rustagi was inadvertently omitted from the author list; John Rasko should be listed as John E. J. Rasko; the affiliations of John E. J. Rasko and Katherine A. High were incorrect; and the author order was incorrect. The correct list of authors with their affiliations is:

Catherine S Manno1,2,15, Glenn F Pierce3,15, Valder R Arruda1,2,15, Bertil Glader4,15, Margaret Ragni5, John J E Rasko6, Margareth C Ozelo7, Keith Hoots8, Philip Blatt9, Barbara Konkle10, Michael Dake4, Robin Kaye1,2, Mahmood Razavi4, Albert Zajko10, James Zehnder4, Pradip K Rustagi11, Hiroyuki Nakai4, Amy Chew1,3, Debra Leonard2,12, J Fraser Wright3, Ruth R Lessard3, Jürg M Sommer3, Michael Tigges3, Denise Sabatino1, Alvin Luk3, Haiyan Jiang3, Federico Mingozzi1, Linda Couto3, Hildegund C Ertl1,13, Katherine A High1,2,14 & Mark A Kay4

1The Children's Hospital of Philadelphia and 2University of Pennsylvania School of Medicine, 3615 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104, USA. 3Avigen Inc., 1301 Harbor Bay Parkway, Alameda, California 94502, USA. 4Stanford University School of Medicine, 300 Pasteur Drive, Room G305, Stanford, California 94305-5208, USA. 5University of Pittsburgh Medical Center, Hemophilia Center of Western Pennsylvania, 3636 Boulevard of the Allies, Pittsburgh, Pennsylvania 15213, USA. 6Royal Prince Alfred Hospital, Centenary Institute of Cancer Medicine & Cell Biology, Locked Bag No 6, Newtown NSW 2042, Australia. 7University of Campinas, State University of Campinas, Caixa Postal 6198, CEP, 13083-970, Campinas-Sao Paolo, Brazil. 8University of Texas Houston Health Science Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA. 9Christiana Care, Christiana Hospital, 4755 Ogletown-Stanton Road, Newark, Delaware 19713, USA. 10University of Pennsylvania School of Medicine Presbyterian Hospital, MAB, Suite 103, 39th & Market Street, Philadelphia., Pennsylvania 19104, USA. 11Stanford University School of Medicine, Department of Hematology, Jane Lathrop Building, 770 Welch Road, Suite 380, Palo Alto, California 94304, USA. 12Weill Medical College of Cornell University, 525 East 68th Street, New York, New York 10012, USA. 13Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA. 14Howard Hughes Medical Institute, 3615 Civic Center Boulevard, Philadelphia, Pennsylvania 19104, USA. 15These authors contributed equally to this work. Correspondence should be addressed to K.A.H. (high@email.chop.edu).

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