00344nas a2200121   4500000000100000008004100001100001200042700001800054700001600072700001600088245010400104022001400208       2021                            d1 aT. Khan1 aY. El-Sockary1 aW. Hamilton1 aE. Shephard00aRecognizing sinonasal cancer in primary care: a matched case-control study using electronic records  a0263-2136