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In (1), the following error was published on page 10.

Editorial

  1. Top of page
  2. Editorial
  3. Editorial
  4. Reference

Although it lacks external validation, it has several advantages with respect to others with internal validation (8, 15) but is more complex and is based on multiple variables.

The text was incorrect and should have read:

Editorial

  1. Top of page
  2. Editorial
  3. Editorial
  4. Reference

Although it lacks external validation, it has several advantages with respect to others with internal validation (8, 15) but is less complex and not based on multiple variables.

We apologize for this error.

Reference

  1. Top of page
  2. Editorial
  3. Editorial
  4. Reference