The second phase of our conversion to reporting laboratory values in Système International (SI) units begins with this issue.1,2 Laboratory values will now be reported in SI units followed by the traditional value in parentheses. After July 1, 1988, only SI units will be used.—ED.
SI Units Take Precedence. Arch Gen Psychiatry. 1987;44(7):676. doi:10.1001/archpsyc.1987.01800190096019
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