TY - JOUR T1 - Accuracy of Patient Health Questionnaire-9 (PHQ-9) for screening to detect major depression: individual participant data meta-analysis JO - BMJ: British Medical Journal PY - 2019/04/09 AU - Levis B AU - Benedetti A AU - Thombs BD ED - DO - DOI: 10.1136/bmj.l1476 PB - BMJ Publishing Group VL - 365 Y2 - 2025/05/29 ER -