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Bäck, S. E.; Nilsson, J. E.; Fex, G.; Jeppson, J. O.; Rosén, U.; Tryding, N.; von Schenck, H.; Norlund, L. (mayo de 1999). «Towards common reference intervals in clinical chemistry. An attempt at harmonization between three hospital laboratories in Skåne, Sweden». Clinical Chemistry and Laboratory Medicine37 (5): 573-592. ISSN1434-6621. PMID10418749. doi:10.1515/CCLM.1999.091.
Holmgren, G.; Jeppson, J. O.; Samuelson, G. (diciembre de 1970). «High-voltage electrophoresis in urinary amino acid screening». Scandinavian Journal of Clinical and Laboratory Investigation26 (4): 313-318. ISSN0036-5513. PMID5486398. doi:10.3109/00365517009046239.
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Lakshman, R.; Tsutsumi, M.; Ghosh, P.; Takase, S.; Anni, H.; Nikolaeva, O.; Israel, Y.; Anton, R. F. et al. (May 2001). «Alcohol biomarkers: clinical significance and biochemical basis». Alcoholism, Clinical and Experimental Research25 (5 Suppl ISBRA): 67S-70S. ISSN0145-6008. PMID11391052.Se sugiere usar |número-autores= (ayuda)
Bäck, S. E.; Nilsson, J. E.; Fex, G.; Jeppson, J. O.; Rosén, U.; Tryding, N.; von Schenck, H.; Norlund, L. (mayo de 1999). «Towards common reference intervals in clinical chemistry. An attempt at harmonization between three hospital laboratories in Skåne, Sweden». Clinical Chemistry and Laboratory Medicine37 (5): 573-592. ISSN1434-6621. PMID10418749. doi:10.1515/CCLM.1999.091.
Holmgren, G.; Jeppson, J. O.; Samuelson, G. (diciembre de 1970). «High-voltage electrophoresis in urinary amino acid screening». Scandinavian Journal of Clinical and Laboratory Investigation26 (4): 313-318. ISSN0036-5513. PMID5486398. doi:10.3109/00365517009046239.