Problem
Abbasi A, Gupta SS, Sabharwal N, Meghrajani V, Sharma S, Kamholz S, Kupfer Y. 2020. A comprehensive review of obstructive sleep apnea. Sleep Sci. 14(2): 142-154. doi: 10.5935/1984-0063.20200056 Make sure that it's that Article above with the that title.
1) In one sentence, summarize the main topic of the second paragraph.
2) What is the goal of this literature review, in your own words?
3) What are the major sections of this paper, as indicated in ALL CAPS?
4) Why the authors have included subsections within each section (as indicated in sentence case) and comment on the organization of a literature review.