OMICS International OMICS International is a scientific organization that drives the progress of research through open access journals and organizes international conferences, The best in science news, commentary, and research. Journal of Pain Management & Medicine Volume 4, Issue 1 Post Mastectomy Pain is No Longer Nightmare Elzohry AAM, Elhamed MFA and Mahran MH Cannabinoids for the Treatment of Chronic Pain A Critical Review of Randomized Controlled Trials Samah Hassan Continuous Perioperative Thoracic Epidural FentanylBupivacaine Infusion vs Continuous Perioperative Fentanyl Intravenous Infusion in Patients Undergoing Major Upper Abdominal Cancer Surgeries Elzohry AAM, AbdElmoniem Bakr M , Mostafa GM, Mohamad MF and Ahmed EH Occipital Neuralgia A Review Kalpana kulkarni