Authors’ contributions
AR, designed the study, funded the PhD project, performed statistical
analyses, and contributed in writing the manuscript. MK contributed to
data collection, strain analysis, statistical analysis, and writing of
the manuscript. HAC worked on artifact analysis and strain analysis for
the inter-observer-variability. AVK collected data in Arkhangelsk and
participated in the manuscript writing. SM and ARy were responsible for
funding acquisition and data collection in Novosibirsk, in addition to
writing the manuscript. SQ contributed by automated data-extraction and
analysis and writing of the manuscript. HS arranged funding and
execution of the Tromsø7 study and also contributed to writing the
manuscript.