In 1995 a cross-sectional study of the Swedish population between the ages of 20 and 85 was carried out. In this study, three dimensions of gerotranscendence were approximated...
This is the supplementary material from the original research article: "The epidemiology of acne vulgaris in a multi-ethnic adolescent population from Rotterdam, the Netherlands: a cross-sectiona
Background: Existing study quality and risk of bias lists for observational studies have important disadvantages. For this reason, a comprehensive widely applicable quality assessment tool for observa
