Zorrilla I, Aguado J, Haro JM, Barbeito S, López Zurbano S, Ortiz A, López P, Gonzalez-Pinto A. Cannabis and bipolar disorder: does quitting cannabis use during manic/mixed episode improve clinical/functional outcomes? Acta Psychiat Scand. 2015 Feb;131(2):100-10. doi: 10.1111/acps.12366
Warttig SL, Forshaw MJ, South J, White AK. New, normative, English-sample data for the Short Form Perceived Stress Scale (PSS-4). J Health Psychol. 2013 Dec;18(12):1617-28. doi: 10.1177/1359105313508346
Becker N, Fortuny J, Alvaro T, Nieters A, Maynadie M, Foretova L, Staines A, Brennan P, Boffetta P, Cocco PL, de Sanjose S. Medical history and risk of lymphoma: results of a European case-control study (EPILYMPH). J Cancer Res Clin Oncol. 2009 Aug;135(8):1099-107. doi: 10.1007/s00432-009-0551