Mozumder, M. K., Keya, U. K., Ahmed, F., Gazi, I., Gop, K., Bhattacharjee, P., Islam, M. A., Islam, S. (2026). Validation of the Bangla PHQ-4 in rural and urban community samples from Bangladesh. PLoS ONE. https://doi.org/10.1371/journal.pone.0352459