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Lee SY, Tan KH
Singapore Med J 2013; 54(8): 432-436; http://dx.doi.org/10.11622/smedj.2013149
A digitally enhanced Fig. 3 is added for greater clarity. The approximate area of the lung was calculated by multiplying the two longest perpendicular diameters of the lung.
Singapore Med J 2013; 54(11): 661; http://dx.doi.org/10.11622/smedj.2013229