Examples
If you are capitalizing words in a title, all words that are 4 characters or more should be capitalized (i.e. With, Among, Were).
Capitalize all proper nouns, including trade names of drugs (Birmingham, Sigma, Gleevec)
Abbreviations (BMI, COPD, MSC), but make sure that they are defined the first time they are used in the abstract and main text.
References to a section of an article (Results, Discussion, Abstract), especially in a response letter.
