TY - GEN AU - Irwig,L M AU - Altman,D G TI - Letter: Peak-flow meter and peak-flow gauge SN - 0140-6736 PY - 1975///0215 KW - Child KW - Child, Preschool KW - Evaluation Studies as Topic KW - Humans KW - Respiratory Function Tests KW - instrumentation KW - Rheology N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1016/s0140-6736(74)90191-3 ER -