Woan H Wong, Anna E Litwic, Elaine M Dennison, MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, United Kingdom
Elaine M Dennison, Victoria University of Wellington, Wellington 6004, New Zealand
Author contributions: Wong WH performed literature search under the supervision of Dennison EM, Litwic AE drafted the manuscript; Dennison EM oversaw the project.
Conflict-of-interest statement: None to declare.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Elaine M Dennison, MB, BChir, MA, MSc, PhD, FRCP, Professor, Honorary Consultant in Rheumatology, MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Tremona Rd, Southampton SO16 6YD, United Kingdom. firstname.lastname@example.org
Telephone: +44-23-80777624 Fax: +44-23-80704021
Received: November 27, 2014
Peer-review started: November 28, 2014
First decision: December 12, 2014
Revised: June 27, 2015
Accepted: July 29, 2015
Article in press: August 3, 2015
Published online: November 12, 2015