Table 3

Collaboration among the authors

Kind of cooperationNumber of articlesExemplary studies
International cooperation17Cannon and Dart (2022), Ramus et al. (2018), Reficco et al. (2021) 
Intercontinental cooperation10Duarte Alonso et al. (2020), Guerrero et al. (2020) 
Cooperation with 3 or more countries5Chan et al. (2021), Garrido-Skurkowicz et al. (2022), Ibáñez et al. (2022) 

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