List of Articles Epidemiology Open Access Article Abstract Page Full-Text 1 - Toxoplasmosis among Patients with Cancers and Blood Disorders in Iran: Serological Evaluation, Risk Factors and Comparison with Healthy Individuals Muhammad I Getso Vahid Raissi Maryam Fasihi Karami Gita Alizadeh Mohammad Zareie Zahra Babaei Samani Fatemeh bayat Omid Raiesi Soodabeh Etemadi 10.22034/jchr.2021.1922691.1257 Open Access Article Abstract Page Full-Text 2 - Epidemiology of Childhood Cancer Based on the Databases of Population-Based Cancer Registries in City of Erbil, Iraq Hafidh AI_Sadi Allaa Hatim Thanoon Moayad Aziz Abdulqadir Mostafa Adnan Abdalrahman Mahmood Hasen Alubaidy Sadiq M. Al-shaikh 10.22034/jchr.2022.696974 Open Access Article Abstract Page Full-Text 3 - Illicit Drugs in Wastewater Treatment Plants A case study: Rio de Janeiro, Brazil Aldo Pacheco Ferreira 10.22034/jchr.2019.668184