RT Journal Article SR Electronic T1 Tetrasomy 21pter→q21.2 in a male infant without typical Down’s syndrome dysmorphic features but moderate mental retardation JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP e26 OP e26 DO 10.1136/jmg.2003.011833 VO 41 IS 3 A1 Rost, I A1 Fiegler, H A1 Fauth, C A1 Carr, P A1 Bettecken, T A1 Kraus, J A1 Meyer, C A1 Enders, A A1 Wirtz, A A1 Meitinger, T A1 Carter, N P A1 Speicher, M R YR 2004 UL http://jmg.bmj.com/content/41/3/e26.abstract AB