Forghani M, Jafarzadeh H, Ghoddusi J, Maghsudlu A, Jafarian A.
Histological Evaluation of the Effect of Platelet-rich Plasma on Pulp Regeneration in Nonvital Open Apex Teeth: An Animal Study. 
J Contemp Dent Pract
2017;
18
(11):1045-1050.