“…The majority of studies used the same methods of distraction, such as magic tricks, music, funny stories, funny songs, telling jokes and puppets. Over half of study reported that the clown's intervention took less than 15 minutes in one intervention [3,4,8,12,15,16,21,22,25,[27][28][29][30][31][32][33]. Again, it is of the utmost importance to get more homogeneity in the type of intervention and duration to improve the knowledge and the efficacy of the clown's intervention.…”