TY  - RPRT
TI  - Duplicate breath testing: some statistical analyses.
AU  - R G Gullberg
PY  - 1988
DO  - 10.1016/0379-0738(88)90186-7
UR  - https://pubmed.ncbi.nlm.nih.gov/3402861/
ID  - 3402861
ER  -