1- Wael Bayoud, Maroun Rizkallah, Samuel Georges, Tonine Younan, Gaby Haykal. A large rice body-containing cyst mimicking infection following total hip arthroplasty, A case report.Case reports in Orthopedic, January 20172- Alaaeddine N., saliba N., Moussa, Mayssam & Hilal, George & khalil, C. Haykal, G. Mesenchymal stem cells derived from bone marrow, umbilical cord adipose tissue do not have the same effect on human osteoarthritic cartilage. Annals of the Rheumatic Diseases. 77. 1246.1-1246. 20183- Maroun Rizkallah, Marwan Haddad Gaby Haykal.Femoral head fracture in an adult patient with isolated posterior labrum avulsion recognized through the ‘fleck’ sign: technical tips Journal of Hip Preservation Surgery Vol. 6, No. 1, pp. 86–90, March 20194- Mohamad Daher, Gaby Haykal, Marven Aoun, Marc Moussallem, Ali Ghoul, Jean Tarchichi, Amer Sebaaly.Pulsed Lavage in Joint Arthroplasty: a Systematic review and meta-analysis.World Journal of Orthopedics, March 20245- Mohamad Daher, Gaby Haykal, Ali Ghoul, Jean Tarchichi, Amer Sebaaly.The efficacy of bone wax in Total Joint Arthroplasty: A systematic review and meta-Analysis.Arch Bone Jt Surg. 2024