Impact of the COVID-19 pandemic on patients with pediatric cancer in low-income, middle-income and high-income countries: a multicentre, international, observational cohort study 

Global Health Research Group on Children’s Non-Communicable Diseases Collaborative

BMJ Open. 2022 Apr 11;12(4):e054690 ; PMID : 35410925 ; PMCID : PMC9021459 ; DOI : 10.1136/bmjopen-2021-054690. 

 

British Medical Journal Open

 

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