https://www.ncbi.nlm.nih.gov/books/NBK1507/
HRAS-Related Costello Syndrome - GeneReviews® - NCBI Bookshelf
While the majority of individuals with HRAS-related Costello syndrome (Costello syndrome) share characteristic findings affecting multiple organ systems, the...
costello syndromehrasrelatedncbibookshelf
https://kidshealth.org/en/parents/costello-syndrome.html
Costello Syndrome | Nemours KidsHealth
Costello syndrome is a very rare disorder that affects multiple organ systems. It causes causes problems that affect a child's heart, muscles, bones, skin,...
costello syndromenemours kidshealth