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  1. xmlghr-summaries.xml 
    https://medlineplus.gov/download/ghr-summaries.xml
    ... problems. Affected individuals have a condition known as pili torti, which means "twisted hair," so named because the ... short hair that grows slowly. In Björnstad syndrome, pili torti usually affects only the hair on the head; ...
  2. Hypohidrotic Ectodermal Dysplasia - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1112
    ... Note: Hair shafts can be brittle and twisted ( pili torti ) or have other anomalies on microscopic analysis; however, ...