Journal article
IMMUNOGLOBULIN AND ANTI-ESCHERICHIA-COLI ANTIBODY IN LOWER RESPIRATORY-TRACT SECRETIONS FROM INFANTS WEIGHING LESS THAN 1500G AT BIRTH
FH SENNHAUSER, A BALLOCH, MJ SHELTON, LW DOYLE, VYH YU, DM ROBERTON
ARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION | BMJ PUBLISHING GROUP | Published : 1990