RT Journal Article SR Electronic T1 Absent IgA and deletions of chromosome 18. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 11 OP 19 DO 10.1136/jmg.7.1.11 VO 7 IS 1 A1 Stewart, J M A1 Go, S A1 Ellis, E A1 Robinson, A YR 1970 UL http://jmg.bmj.com/content/7/1/11.abstract AB