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. 2022 Feb 28;42(3):181–189. doi: 10.1111/cpf.12745

Figure 1.

Figure 1

Histogram of frequency distribution for total lung capacity (TLC) Z‐scores in never‐smokers with no self‐reported or doctor‐diagnosed asthma, chronic bronchitis or emphysema (n = 228). Grey bars indicate TLC Z ≥ LLN while black bars indicate TLC Z < LLN. LLN, lower limit of normal