Code smells

s, titles and keywords were analysed by VOSviewer using default parameters. All common terms like study, baseline, control group, trend, method were excluded from the analysis. Three maps were induced (1) clustered landscapes presenting popularity of terms (more popular terms are presented in larger squares), associations between terms (terms locted near each other are stongly associated) and related term clusters (terms colured with the same colour), (2) timeline landscape presenting the evolution of terms based on the average publishing year of publications in which the term appeared and (3) the auhtors keyword co – ocuurence network presenting which keyords appeared in the same publication (keywords linked together), popularity of a keyord (more popular keywords are presented with larger circles) and citation rate of a keyord based on the average number of citation in which the keyword appeared.