Which of the following are associated with postoperative atelectasis? 
Definitions:
Gross Profit Ratio
A financial metric that shows the portion of sales revenue that exceeds the cost of goods sold, indicating efficiency in production and sales.
Loss on Purchase Commitments
A financial loss that occurs when a company commits to purchasing goods at a certain price but the market value of these goods decreases before the purchase is completed.
Continuing Operations
The segments or activities of a business expected to continue for the foreseeable future, excluding any discontinued operations.
Revenue Recognition
The accounting principle that determines the specific conditions under which revenue is recognized or accounted for.
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