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Helland A, Espnes KA, Reimers A, Aamo T, Zahlsen K, Rygnestad T, Spigset O.Helland A, et al. Among authors: rygnestad t.Tidsskr Nor Laegeforen. 2008 Jan 3;128(1):42-5.Tidsskr Nor Laegeforen. 2008.PMID: 18183057Free article.Norwegian.
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Rygnestad T, Spigset O.Rygnestad T, et al.Tidsskr Nor Laegeforen. 2001 Feb 28;121(6):708-9.Tidsskr Nor Laegeforen. 2001.PMID: 11293355Free article.Norwegian.No abstract available.
Rygnestad T, Aamo T.Rygnestad T, et al.Tidsskr Nor Laegeforen. 1997 Mar 10;117(7):1004-5.Tidsskr Nor Laegeforen. 1997.PMID: 9102996Norwegian.No abstract available.