Abdul Rahman Jihad Manssor, Zaid Mohammed Mubarak Al–Mahdawi and Azzawi Mustafa Hadi 2019. The effect of treatment by L-carnitine for infertile men on semen parameters. Tikrit Journal of Pure Science. 24, 2 (Apr. 2019), 30–36. DOI:https://doi.org/10.25130/tjps.v24i2.348.