1. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), American Psychiatric Association, Arlington, VA 2013. (doi: 10.1176/appi.books.9780890425596).
2. Murray CJL, Lopez AD. The Global Burden of Disease, Harvard University Press, Cambridge, MA 1996:21.
3. Rai V, Yadav U, Kumar P, Yadav SK, Gupta S. MethylenetetrahydroFolate reductase A1298C genetic variant& risk of schizophrenia: A meta-analysis. Indian J Med Res. 2017;145(4):437-47.
4. Tang R, Wang J, Yang L, Ding X, Zhong Y, Pan J, et al. Front. Subclinical Hypothyroidism and Depression: A Systematic Review and Meta-Analysis. Endocrinol (Lausanne). 2019;10:340. (doi: 10.3389/fendo.2019. 00340).
5. Eyles DW, Trzaskowski M, Vinkhuyzen AAE, Mattheisen M, Meier S, Gooch H, et al. The association between neonatal vitamin D status and risk of schizophrenia. Sci Rep. 2018;8:17692. (doi: 10.1038/s41598-018-35418-z).