TY - RPRT TI - Decrease of helper T cells in children with recurrent respiratory tract infections. AU - L Baranda AU - B Moncada AU - R González-Amaro PY - 1984 DO - 10.1093/infdis/149.1.123 UR - https://pubmed.ncbi.nlm.nih.gov/6229587/ ID - 6229587 ER -