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Keywords:

  • Body height;
  • differential equation;
  • disease specific growth equation;
  • non-linear regression analysis;
  • Turner's syndrome;
  • 45,X-monosomy;
  • 46,XX/45,X-mixoploidy

Disease-specific growth curves for Turner's syndrome were calculated by means of 2nd order homogeneous differential equations with constant coefficients, taking different cytogenetical subtypes into account. Comparison of these growth curves between X-monosomic (n=64) and 46,XX/45,X-mixoploid (n = 20) patients reveals no differences, in contrast to the commonly accepted opinion.