General terms used to refer to a type of article or a section within an article should be set lowercase.His letter to the editor was published in the December issue. The methods sections of articles are often inadequate.However, when referring to a specific type of article, or a section within a specific article, capitalize the first letter in the words of the category or section name.The Letters to the Editor section of Archives of Neurology is a favorite of mine. See the “Methods” section for a full description of each of the groups in the study. ...
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