Addendum to: npj Schizophrenia https://doi.org/10.1038/npjschz.2015.16, Published online 6 May 2015

In the original published version of the manuscript, no data availability statement was included. This addendum has been added to include the following data availability statement “Data obtained from the patients in the Taiwan cohort were used with agreement from National Taiwan University Hospital. Data acquisition was funded by grant NSC99-3112-B-002-030 and was collected at National Taiwan University Hospital around 2010. Data obtained from the patients in the Huaxi cohort were used with agreement from Sichuan University. Data acquisition was funded by National Nature Science Foundation of China (81130024), National Key Technology R & D Program of the Ministry of Science and Technology of China during the 12th Five-Year Plan (2012BAI01B06). Reasonable requests for access to the data should be directed to Tao Li, The Mental Health Center and the Psychiatric Laboratory, West China Hospital, Sichuan University. Data obtained from the patients in the Xiangya cohort were used with agreement from the Second Xiangya Hospital of Central South University in China. Reasonable requests for access to the data should be directed to Zening Liu, Institute of Mental Health, Second Xiangya Hospital, Central South University. Data obtained from the patients in the Nottingham cohort were used with agreement from Nottingham University. Data acquisition was funded by MRC (grant reference G0601442). Reasonable requests for access to the data should be directed to Peter F Liddle, Division of Psychiatry and Applied Psychology, University of Nottingham.”