{Reference Type}: Letter {Title}: Digital clubbing in cystic fibrosis: The nails as clues to advanced disease. {Author}: Hill RC;Axler E;Lipner SR; {Journal}: J Am Acad Dermatol {Volume}: 0 {Issue}: 0 {Year}: 2024 Jul 9 {Factor}: 15.487 {DOI}: 10.1016/j.jaad.2024.06.075