Figure 1. Schematic presentation of three classifications of letter to the editor (Letter).
Letters can be classified into three categories, Disagreement, Agreement, and Complementary (see text). Some Letters contain overlapping contexts, accounting for circles’ overlapping. In each category, some subcategories exist according to the context of the Letter. The number in parenthesis indicates that of Letters most recently published in the Journal of Obstetrics and Gynaecology Research.
From: Embracing Letters to the Editor: Classifying Types of Letters into Disagreement, Agreement, and Complementary
