Affiliation: | (1) Department of Medical Genetics, Oregon Health Sciences University, 97201 Portland, OR, USA;(2) Department of Biochemistry, Oregon Health Sciences University, 97201 Portland, OR, USA;(3) Crippled Children's Division, Oregon Health Sciences University, 97201 Portland, OR, USA;(4) Genetics Division and Mental Retardation Research Center, Children's Hospital, 02115 Boston, MA, USA |