Duration of stages of the Middle Phalanx Maturation method in a contemporary population: a 6-year longitudinal analysis.

This study confirms, with a relevant sample size, the median duration of 1 year for each MPM stage from MPS2 to MPS4. Despite the distinctive interindividual variability, the interquartile range is 6 months or less for all but one interval, confirming the soundness of results.