Further to their GWAS study, the SGENE-plus and GROUP consortia obtained genotypes on additional samples from Europe and China (2865 schizophrenia cases; 4493 controls) using a Centaurus assay (Nanogen). Details of these are given in reference (11) but briefly, these comprise schizophrenia case/control samples from China (460/466), Denmark/Aarhus (236/500), Denmark/Copenhagen (513/1338), Germany/Bonn (275/510), Germany/Munich (178/ 320), Hungary (264/ 223), Norway (201/357), Russia (483/ 487) and Sweden (255/292).
