Willis Tracey, Macfarlane Mike, Willis Derek
The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry, UK.
Severn Hospice, Shrewsbury, UK.
Breathe (Sheff). 2020 Dec;16(4):200277. doi: 10.1183/20734735.0277-2020.
https://bit.ly/3mVDY0P. (此为网址,通常保留原文即可,若强行翻译会失去其原有功能,所以按要求保留原样)