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Use the clues below to find the answers in the word grid

Specific to the field of medicine, describe the methodology, implementation, and results of controlled studies, usually undertaken with large patient groups (Two words - _ _ _ _ _CA _ _ _ _ _ _S)
Detailed studies classified as primary literature, include hypothesis, background study, methods, results, interpretation of findings, and a discussion of possible implications (Two words - O_ _ _ _ NA _ _ _ _ _ _ RCH)
Scholarly reviews of fundamental concepts or prevalent ideas in a field, essays that present a personal point of view critiquing widespread notions pertaining to a field (Two words - P_ _ _ _ _CTI_ _ P_ _ _ _ _)

Present the author’s viewpoint on the interpretation, analysis, or methods used in a particular study, comment on the strength and weakness of a theory or hypothesis, should be backed by evidence (Two words - O_ _ _ _ _N A _ _ _ _ _ E_)
Give an overview of existing literature in a field with respect to specific issues, considered secondary literature (Two words - R_ _ _ _ _ A _ _ _ _ _ _S)
Short articles that draw attention to or present a criticism of a previously published article, book, or report (Two words - C_ _ _ _ _ _ _ _ _ _S)

Provide insight and opinion on recently published scholarly books (Two words - B _ _ _ R_ _ _ _ _S)
Present the details of real patient cases from medical or clinical practice, discuss the signs, symptoms, diagnosis, and treatment of a disease (Two words - _ _ _ _ _ CA _ C_ _ _ S _ _ _ _ _S)