1 disease that is common. 1 disease that is very rare. 28 diseases without any prevalence information. Causes of Barrel chest without any prevalence information The following causes of Barrel chest are ones for which we do not have any prevalence information.
Definition of flashback for English Language Learners. : a part of a story or movie that describes or shows something that happened in the past.
A retrospective, generally, is a look back at events that took place, or works that were produced, in the past. As a noun, retrospective has specific meanings in medicine, software development, popular culture and the arts. It is applied as an adjective, synonymous with the term retroactive, to laws, standards, and awards.