Mahsa Ghajarzadeh is an expert epidemiologist who earned her degrees (MD, M.p.H, and Ph.D of epidemiology) from Tehran University of Medical Sciences, and continued her research as a postdoc at Johns Hopkins University. She has great experience in medical research and research education for junior students. She has also published several research papers on systematic reviews and meta-analyses. Dr. Sara Hanaei started medicine at TUMS in 2010 and a Master of Public Health (MPH) in 2014. She graduated with MD-MPH in 2018. She also received TUMS Research Diploma (TUMS-RD) in a 2-year study period from 2013-2015. She was a research assistant at the Research Center for Immunodeficiencies (RCID) from 2018-2021 and further continued neurosurgery as a clinical specialty at TUMS in 2021. She has experience in teaching research skills to students. Medical research was one of her greatest interests since the beginning of her academic education, especially in Neurosurgery and Immunology, therefore, she started research in those fields. Over the past decade, she contributed to different research projects, books, and other research activities including instructing research workshops in statistics, systematic reviews, and meta-analysis. She also got involved in executive tasks and developed executive skills in organizing scientific events, congresses, festivals, scoring, rankings, etc. She also co-edited a 2-volume book: - Human Brain and Spinal Cord Tumors: From Bench to Bedside. Volume 1 (Neuroimmunology and Neurogenetics) - Human Brain and Spinal Cord Tumors: From Bench to Bedside. Volume 2 (The Path to Bedside Management). In early 2024, she co-founded Borderless Research, Advancement, and Innovation in Neuroscience Network (BRAINet), which was intended to serve in a multidisciplinary and cross-disciplinary manner and embrace all aspects of neuroscience. On this account, different disciplines in neuroscience may come together in the BRAINet including theoretical and molecular neuroscience, clinical neuroscience (neurology), surgical neuroscience (neurosurgery), and social neuroscience. In the light of the borderless collaboration of seniors and juniors, it is provisioned to promote scientific activities and step forward to advancement and innovation in neuroscience.Nima Rezaei, MD, PhD, is Professor of Clinical Immunology and Allergy at Tehran University of Medical Sciences, where he also serves as Associate Dean of International Affairs for the School of Medicine and Director of the Global Academic Program. He is Deputy President of the Research Center for Immunodeficiencies and holds an affiliated research appointment in the Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institutet, Sweden. He earned his MD from Tehran University of Medical Sciences and his PhD in Clinical Immunology and Human Genetics from the University of Sheffield, United Kingdom. His research addresses primary immunodeficiencies and translational immunology, with recent work extending into computational and AI-based approaches to immune profiling. He is the founder and President of the Universal Scientific Education and Research Network (USERN) and serves as co-editor of the Springer Nature series Advances in Experimental Medicine and Biology.

• 1. Medical Research: Steps Forward Towards Scientific Advancement2. Research Methodology: Primary vs. Secondary Studies3. Systematic Reviews: Definition and Structure4. Topic Selection: Structured Questions5. Systematic Search for A Systematic Review6. Search-Record Screening7. Data Extraction8. Risk of Bias Assessment in Included Studies9. Data Synthesis10. Performing Meta-Analysis in Different Software11. Interpretation of Results in Forest Plot12. Publication Bias and Funnel Plot13. Heterogeneity Among Included Studies14. Missing Data in Systematic Reviews15. Network Meta-Analysis16. Quality assessment of systematic reviews17. Scientific Writing in A systematic review18. Ethics in Systematic Reviews

Mahsa Ghajarzadeh is an expert epidemiologist who earned her degrees (MD, M.p.H, and Ph.D of epidemiology) from Tehran University of Medical Sciences, and continued her research as a postdoc at Johns Hopkins University. She has great experience in medical research and research education for junior students. She has also published several research papers on systematic reviews and meta-analyses. Dr. Sara Hanaei started medicine at TUMS in 2010 and a Master of Public Health (MPH) in 2014. She graduated with MD-MPH in 2018. She also received TUMS Research Diploma (TUMS-RD) in a 2-year study period from 2013-2015. She was a research assistant at the Research Center for Immunodeficiencies (RCID) from 2018-2021 and further continued neurosurgery as a clinical specialty at TUMS in 2021. She has experience in teaching research skills to students. Medical research was one of her greatest interests since the beginning of her academic education, especially in Neurosurgery and Immunology, therefore, she started research in those fields. Over the past decade, she contributed to different research projects, books, and other research activities including instructing research workshops in statistics, systematic reviews, and meta-analysis. She also got involved in executive tasks and developed executive skills in organizing scientific events, congresses, festivals, scoring, rankings, etc. She also co-edited a 2-volume book: - Human Brain and Spinal Cord Tumors: From Bench to Bedside. Volume 1 (Neuroimmunology and Neurogenetics) - Human Brain and Spinal Cord Tumors: From Bench to Bedside. Volume 2 (The Path to Bedside Management). In early 2024, she co-founded Borderless Research, Advancement, and Innovation in Neuroscience Network (BRAINet), which was intended to serve in a multidisciplinary and cross-disciplinary manner and embrace all aspects of neuroscience. On this account, different disciplines in neuroscience may come together in the BRAINet including theoretical and molecular neuroscience, clinical neuroscience (neurology), surgical neuroscience (neurosurgery), and social neuroscience. In the light of the borderless collaboration of seniors and juniors, it is provisioned to promote scientific activities and step forward to advancement and innovation in neuroscience.Nima Rezaei, MD, PhD, is Professor of Clinical Immunology and Allergy at Tehran University of Medical Sciences, where he also serves as Associate Dean of International Affairs for the School of Medicine and Director of the Global Academic Program. He is Deputy President of the Research Center for Immunodeficiencies and holds an affiliated research appointment in the Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institutet, Sweden. He earned his MD from Tehran University of Medical Sciences and his PhD in Clinical Immunology and Human Genetics from the University of Sheffield, United Kingdom. His research addresses primary immunodeficiencies and translational immunology, with recent work extending into computational and AI-based approaches to immune profiling. He is the founder and President of the Universal Scientific Education and Research Network (USERN) and serves as co-editor of the Springer Nature series Advances in Experimental Medicine and Biology.

• 1. Medical Research: Steps Forward Towards Scientific Advancement2. Research Methodology: Primary vs. Secondary Studies3. Systematic Reviews: Definition and Structure4. Topic Selection: Structured Questions5. Systematic Search for A Systematic Review6. Search-Record Screening7. Data Extraction8. Risk of Bias Assessment in Included Studies9. Data Synthesis10. Performing Meta-Analysis in Different Software11. Interpretation of Results in Forest Plot12. Publication Bias and Funnel Plot13. Heterogeneity Among Included Studies14. Missing Data in Systematic Reviews15. Network Meta-Analysis16. Quality assessment of systematic reviews17. Scientific Writing in A systematic review18. Ethics in Systematic Reviews