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Toftager M, Ekholm O, Schipperijn J, Stigsdotter U, Bentsen P, Grønbæk M, Randrup TB, Kamper-Jørgensen F.Toftager M, et al. Among authors: schipperijn j.J Phys Act Health. 2011 Aug;8(6):741-9. doi: 10.1123/jpah.8.6.741.J Phys Act Health. 2011.PMID: 21832288
Van Kann DH, de Vries SI, Schipperijn J, de Vries NK, Jansen MW, Kremers SP.Van Kann DH, et al. Among authors: schipperijn j.J Sch Health. 2016 Dec;86(12):913-921. doi: 10.1111/josh.12459.J Sch Health. 2016.PMID: 27866384