"Clinical Chemistry and Laboratory Medicine", 29.10 (1991): 657-715. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/cclm.1991.29.issue-10/issue-files/cclm.1991.29.issue-10.xml

Clinical Chemistry and Laboratory Medicine (1991), 29(10), pp. 657-715. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/cclm.1991.29.issue-10/issue-files/cclm.1991.29.issue-10.xml

Clinical Chemistry and Laboratory Medicine. 1991. 29(10): 657-715. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/cclm.1991.29.issue-10/issue-files/cclm.1991.29.issue-10.xml