BMJ 2022; 378 doi: https://doi.org/10.1136/bmj-2021-069094 (Published 25 July 2022)
Cite this as: BMJ 2022;378:e069094
Susanna Almond, David Mant, and Matthew Thompson
Br J Gen Pract. 2009 Nov 1; 59(568): 872–874.
doi: 10.3399/bjgp09X472971