@article{1574231875649636992,
author="FLETCHER C. M.",
title="Standardised questionnaire on respiratory symptoms : a statement prepared and approved by the MRC Committee on the Aetiology of Chronic Bronchitis (MRC breathlessness score)",
journal="BMJ",
year="1960",
volume="2",
pages="1665",
URL="https://cir.nii.ac.jp/crid/1574231875649636992"
}