
Keywords: HVA; Homovanillic acid; 5-HIAA; 5-hydroxyindoleacetic acid; MHPG; 3-methoxy-4-hydroxyphenylglycol; CSF; Cerebrospinal fluid; CNS; Central nervous system; SNP; Single nucleotide polymorphism; SPIR; Swedish psychiatric inpatient register; HWE; Hardy-Weinb