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  Indian J Med Microbiol
 

Figure 1: Concavity–convexity quotient. The distance from the upper end of the upper vertebra to the lower end of the lower vertebra on the concave side of the curve is named A-distance. The B-distance is the distance from the upper end of the upper vertebra to the lower end of the lower vertebra on the convex side of the curve. Finally, the quotient between A and B would be calculated

Figure 1: Concavity–convexity quotient. The distance from the upper end of the upper vertebra to the lower end of the lower vertebra on the concave side of the curve is named A-distance. The B-distance is the distance from the upper end of the upper vertebra to the lower end of the lower vertebra on the convex side of the curve. Finally, the quotient between A and B would be calculated