Engaging communities through participatory learning action for the control and prevention of diabetes: A protocol for the Process Evaluation of the EMPOWER-D trial in Pakistan and Afghanistan - Maria Ishaq Khattak; Khalid Rehman; Saima Afaq; Sabeen Saeed Butt; Gul Ghutai; Refat Hanifi; Murtaza Hofiani; Amber Tahir; Rubia Zafar; Hannah Maria Jennings (PLoS ONE, 2026)