TY  - RPRT
TI  - Nasal pH measurement: a reliable and repeatable parameter.
AU  - R J England
AU  - J J Homer
AU  - L C Knight
AU  - S R Ell
PY  - 1999
DO  - 10.1046/j.1365-2273.1999.00223.x
UR  - https://pubmed.ncbi.nlm.nih.gov/10196653/
ID  - 10196653
ER  -