Kalash, S., Aboelsaad, N., Shokry, M. and Choukroun, J. 2017. The efficiency of using advanced PRF-xenograft mixture around immediate implants in the esthetic zone: a randomized controlled clinical trial. Journal of Osseointegration. 9, 4 (Dec. 2017), 317–22. DOI:https://doi.org/10.23805/jo.2017.09.04.02.