A review of this literature, drawing on the CITE-ITEL data base has been published. See:
Hoffman, J. V., Svrcek, N., Lammert, C., Daly-Lesch, A., Steinitz, E., Greeter, E., & DeJulio, S. (2019). A research review of literacy tutoring and mentoring in initial teacher preparation: Toward practices that can transform teaching. Journal of Literacy Research, 51(2), 233-251.