"Clinical Chemistry and Laboratory Medicine", 31.4 (1993): 187-266. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/cclm.1993.31.issue-4/issue-files/cclm.1993.31.issue-4.xml

Clinical Chemistry and Laboratory Medicine (1993), 31(4), pp. 187-266. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/cclm.1993.31.issue-4/issue-files/cclm.1993.31.issue-4.xml

Clinical Chemistry and Laboratory Medicine. 1993. 31(4): 187-266. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/cclm.1993.31.issue-4/issue-files/cclm.1993.31.issue-4.xml