**Authors: **Chandan J, Bandyopadhyay S, Taylor J, Nirantharakumar K.
**Author Affiliations: **b Warwick Medical School, University of Warwick, Coventry, CV47HL, United Kingdom; c The Department of Economics, University of Birmingham, B152TT, United Kingdom; e Birmingham Women’s and Children’s Hospitals NHS Foundation Trust, Birmingham, United Kingdom; f Midlands Health Data Research UK & Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, United Kingdom
Original content: https://web.www.healthdatagateway.org/paper/7385442