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Rystedt K, Harbin NJ, Lindbaek M, Radzeviciene R, Gunnarsson R, Eggertsen R, C Butler C, van der Velden AW, J Verheij T, Sundvall PD.Rystedt K, et al.Scand J Prim Health Care. 2020 Dec;38(4):447-453. doi: 10.1080/02813432.2020.1843942. Epub 2020 Nov 11.Scand J Prim Health Care. 2020.PMID: 33174788Free PMC article.