Irving Greg, Holden John
Institute of Public Health, University of Cambridge, Cambridge, CB2 OSR, UK.
General Practitioner, Garswood Surgery, St. Helens, Lancashire, WN4 0XD, UK.
F1000Res. 2017 Jun 8;6:805. doi: 10.12688/f1000research.11888.1. eCollection 2017.
[This retracts the article DOI: 10.12688/f1000research.8114.1.][This retracts the article DOI: 10.12688/f1000research.8114.2.][This retracts the article DOI: 10.12688/f1000research.8114.3.].
[本文撤回文章DOI: 10.12688/f1000research.8114.1。][本文撤回文章DOI: 10.12688/f1000research.8114.2。][本文撤回文章DOI: 10.12688/f1000research.8114.3。]