Why cant I have footnoted material in the main text?
While using footnotes is an accepted way of providing readers with supplementary material on a printed page, footnotes are not as useful in web publication because excessive scrolling is usually required to reach the end of the page. And when publishing in the Vancouver system with superscript numeric reference indicators, linked superscript footnote indicators can be confusing. For these reasons it is RRH style to include footnoted information in brackets in the main text.