[1] Alan E. Guttmacher is at the National Human Genome Research Institute,
[2] Building 31,undefined
[3] Room 4B09,undefined
[4] Bethesda,undefined
[5] MD 20892-2152,undefined
[6] USA.,undefined
[7] Mary Porteous is at the SE Scotland Genetic Service,undefined
[8] Western General Hospital,undefined
[9] Crewe Road,undefined
[10] Edinburgh EH4 2XU,undefined
[11] Scotland.,undefined
[12] Joseph D. McInerney is at the National Coalition for Health Professional Education in Genetics,undefined
[13] 2360 West Joppa Road,undefined
[14] Suite 320,undefined
[15] Lutherville,undefined
[16] MD 21093,undefined
[17] USA.,undefined