As per the referenced journal, the main sources and causes of medication errors in pediatric clinical wards are detailed extensively. The authors of the journal provide a comprehensive analysis of how medical errors and clinical adverse events contribute significantly to potential health issues that could have been preventable. The journal highlights a range of factors that contribute to medication errors in pediatric clinical settings, shedding light on critical aspects such as prescribing, dispensing, administering, and monitoring medications. Through their research and data analysis, the authors identify various sources of medication errors, emphasizing the importance of addressing these issues to enhance patient safety and prevent harm in pediatric clinical environments.