Tailoring Type II Diabetes Treatment: Investigating the Effect of 5-HTT Polymorphisms on HbA1c Levels after Metformin Initiation

Figure 1

Flowchart of study subject selection. GIANTT: Groningen Initiative to ANalyse Type 2 Diabetes; PROVALID: PROspective cohort study in patients with type 2 diabetes mellitus for VALidation of biomarkers; 5-HTT: serotonin transporter; SNP: single nucleotide polymorphisms.