Fig. 2
From: Exploring genetic association of systemic iron status and risk with incidence of diabetic neuropathy
Workflow of Mendelian randomization study revealing causality from iron status on diabetic neuropathy. IVW: inverse variance weighted; MR: Mendelian randomization; MR-PRESSO: MR Pleiotropy RESidual Sum and Outlier; SNP: single-nucleotide polymorphisms