"Clinical Chemistry and Laboratory Medicine", 18.12 (1980): 867-954. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/cclm.1980.18.issue-12/issue-files/cclm.1980.18.issue-12.xml

Clinical Chemistry and Laboratory Medicine (1980), 18(12), pp. 867-954. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/cclm.1980.18.issue-12/issue-files/cclm.1980.18.issue-12.xml

Clinical Chemistry and Laboratory Medicine. 1980. 18(12): 867-954. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/cclm.1980.18.issue-12/issue-files/cclm.1980.18.issue-12.xml