To collect information on the long-term effects of XLH on children and adults who have participated in burosumab clinical trials, adults and children who have not participated in burosumab clinical trials, and who may or may not have been treated with burosumab during the course of the study.
Validate the use of respiratory inductance plethysmography (RIP) and esophageal manometry in diagnosing upper airway obstruction (UAO) in newborn infants.
To investigate the connection between diet, genetics, and diseases in Hispanic / Latino youth.
To determine if a home visitation program for breastfeeding mothers affects the health of their babies.
