TY  - RPRT
TI  - IgG subclass deficiency.
AU  - S O'Keeffe
AU  - P Finnegan
PY  - 1993
DO  - 10.1378/chest.104.6.1940
UR  - https://pubmed.ncbi.nlm.nih.gov/8253003/
ID  - 8253003
ER  -