Screen capture of web map application (with the exploratory layer of frequency counts of campaigns per forward sortation area (FSA) displayed). Screen capture of web map application (with the exploratory layer of frequency counts of campaigns per forward sortation area (FSA) displayed). This figure shows the CHRP displaying one of its exploratory layers. The variable of interest here is number of crowdfunding campaigns per forward sortation area. Permission has been granted to reproduce this image and it is not under copyright. Alysha van Duynhoven et al. BMJ Open 2019;9:e026365 ©2019 by British Medical Journal Publishing Group