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The three standard BLUE points are illustrated (two anterior and one posterior) [modified from [40]]. Two hands are placed on the front chest such that the upper hand touches the clavicle, and the upper anterior BLUE-point is in the middle of the upper hand, while the lower anterior BLUE-point is in the middle of the lower palm. The PLAPS-point is vertically at the posterior axillary line and horizontally at the same level of the lower anterior BLUE-point.
