Consequently, after 2007, we cannot observe an integrated review in RL/CLSC, which can present a comprehensive (not partial) review in this field despite the vast number of published papers (see Fig. 2). Besides, in order to have an overall view of the future directions in RL/CLSC studies, it is now necessary to reconstruct a new literature review study based on recent publications in the area. This last line of the Table 1 can present the role of this paper in covering the presented gap of the literature.