Frontiers Associations between purine metabolites and monoamine neurotransmitters in first episode psychosis Frontiers Serum selenium and reduced mortality in middle aged and older adults with prefrailty or frailty: the mediating role of inflammatory status Correlation Between Erythrocyte Glutathione Levels and Severity of Melasma How to Check Your Genetic Data for G6PD Deficiency Neonatal glucose 6 phosphate dehydrogenase activity by gestational age and sex: evidence based cut offs for newborn screening in Saudi Arabia BMJ Paediatrics Open Methotrexate induced hepatotoxicity mechanism, clinical cases and treatment approaches Toxicological Research Springer Nature Link