title: Invited commentary to: Lynch and von Hippel "An education gradient in health, a health gradient in education, or a confounded gradient in both?".
authors.affiliation: Harvard University, Center for Population and Development Studies, Cambridge, USA. Electronic address: phessel@hsph.harvard.edu.
authors.forename: Philipp
authors.initials: P
authors.lastname: Hessel
authors.affiliation: Harvard University, Center for Population and Development Studies, Cambridge, USA.
authors.forename: J
authors.initials: J
authors.lastname: Simon Thomas
mesh_terms: D054624:Health Status Disparities; D012959:Socioeconomic Factors
keywords: Education gradient in health; Educational attainment; Fixed-effects; Health gradient in education; Self-rated health; Young adults