“Assessed and perceived oral health of older people who visit the dental practice, an exploratory cross-sectional study,” by Pieternella C. Bots-VantSpijker, Claar D. van der Maarel-Wierink, Jos M. G. A. Schols, and Josef J. M. Bruers (PLoS ONE 16(9): e0257561. doi.org/10.1371/journal.pone.0257561, XML, HTML, and .pdf format, p.).
journals.plos.org/plosone/article?id=10.1371/journal.pone.0257561
