Schwartz T W, Fuhlendorff J, Kjems L L, Kristensen M S, Vervelde M, O'Hare M, Krstenansky J L, Bjørnholm B
University Department of Clinical Chemistry, Rigshospitalet, Copenhagen, Denmark.
Ann N Y Acad Sci. 1990;611:35-47. doi: 10.1111/j.1749-6632.1990.tb48920.x.