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Ekstrand M, Tydén T, Darj E, Larsson M.Ekstrand M, et al. Among authors: tyden t.Eur J Contracept Reprod Health Care. 2007 Jun;12(2):111-8. doi: 10.1080/13625180701201145.Eur J Contracept Reprod Health Care. 2007.PMID: 17559008
Häggström-Nordin E, Hanson U, Tydén T.Häggström-Nordin E, et al. Among authors: tyden t.J Adolesc Health. 2002 Apr;30(4):288-95. doi: 10.1016/s1054-139x(01)00401-3.J Adolesc Health. 2002.PMID: 11927241
Tydén T, Aneblom G, von Essen L, Häggström-Nordin E, Larsson M, Odlind V.Tydén T, et al.Lakartidningen. 2002 Nov 21;99(47):4730-2, 4735.Lakartidningen. 2002.PMID: 12523048Swedish.