TIDES 2.0: Prevalence and Longitudinal Course of Depression, Anxiety, and Behavior Problems in Children With Cystic Fibrosis Under 12 Years of Age

Who May Qualify: 1. Child with a diagnosis of Cystic fibrosis (CF) actively followed by the CF care team at a participating site 2. Child is age 18 months thru 11 years 3. English and/or Spanish speaking 4. Parent/legal guardian willing and able to give willing to sign a consent form, and for minor participants ages 7 thru 11 years able to give assent. Who Should NOT Join This Trial: - Unable or unwilling to participate in study procedures, or at Site PI discretion. Always talk to your doctor about whether this trial is right for you.