François, V., Bernard, F., Bernard, B., Nader, H., Paul, V., Patrick, L., . . . Lilli, H. (2011). The 'help' question doesn't help when screening for major depression: External validation of the three-question screening test for primary care patients managed for physical complaints. BMC.

François, Verdon, Favrat Bernard, Burnand Bernard, Haftgoli Nader, Vaucher Paul, Lombardo Patrick, Bischoff Thomas, và Herzig Lilli. The 'help' Question Doesn't Help When Screening for Major Depression: External Validation of the Three-question Screening Test for Primary Care Patients Managed for Physical Complaints. BMC, 2011.

François, Verdon, et al. The 'help' Question Doesn't Help When Screening for Major Depression: External Validation of the Three-question Screening Test for Primary Care Patients Managed for Physical Complaints. BMC, 2011.