Figure 1. The association of the HRM plots with the “reverse RGB”. The “reverse RGB” is named so because it starts from blue (type I) to green (type II) to red (type III) which are the dominant colors in each figure. Figure adapted from Reference [1]. Licensed under Creative Commons Attribution 4.0 International License (CC BY 4.0). HRM: high-resolution manometry; RGB: red-green-blue.