RT Journal Article SR Electronic T1 Prenatal Testing and Counseling for Down Syndrome: Reply JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 228 OP 228 DO 10.3122/15572625-13-3-228a VO 13 IS 3 A1 Sarah Cate A1 Susie Ball YR 2000 UL http://www.jabfm.org/content/13/3/228.1.abstract AB