Liu 2004 respiratory clinical score: four caller-assigned 0-3 domains — respiratory_rate (age-banded Table 1 ordinal, not raw breaths/min), retractions, dyspnea, and auscultation. magent sums only (max 12) and does not count breaths or auscultate. Score only; Liu 2004 does not print mild/moderate/severe total-score cutoffs. Not a diagnosis or treatment order. Not PRAM. Not Westley 1978 croup.

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