Give all measurements and weights in standard metric units. Syst me International units are acceptable. Type footnotes at the bottom of manuscript page on which they are cited. Credit suppliers of drugs, equipment, and other brand-name material mentioned in the paper in parentheses in text, giving company name and location. Type acknowledgments, including complete grant or subsidy information from both profit and nonprofit organizations, at the end of the text before the references.
References Identify references in the text using Arabic numerals in brackets on the line.
Do not cite personal communications, manuscripts in preparation, and other unpublished data in the reference list. They may be mentioned in the text in parentheses. Type references double-spaced on a separate sheet. Number references consecutively in the order in which they are mentioned in the text. Double-check references for accuracy, completeness and nonduplication.