{Reference Type}: Letter {Title}: Why do journals continue to publish single-authored systematic reviews? Comment on Pacheco et al, 2023. {Author}: Nashwan AJ;Azzam AY;Chaabna N;Joy GV;Kunjavara J; {Journal}: J Clin Epidemiol {Volume}: 0 {Issue}: 0 {Year}: 2024 Jul 11 {Factor}: 7.407 {DOI}: 10.1016/j.jclinepi.2024.111463