National health insurance membership in Indonesia: Do socio-economic elements matter? - Misnaniarti; Wahyu Pudji Nugraheni; Agung Dwi Laksono; Asep Kusnali; Irfan Ardani; Leny Latifah; Rofingatul Mubasyiroh; Diah Yunitawati; Tati Suryati Warouw (PLoS ONE, 2025)