Table 1.

Detailed list of site, adult/pediatric cohort, and contact method.

Site	Cohort makeup	Contact methoda
Children’s Mercy Hospital	Pediatric	Email
University of Kansas Medical Center	Pediatric	Email
Marshfield Clinic	Pediatric	Email
Medical College of Wisconsin	Adult	Email
University of Iowa Healthcare	Pediatric	USPS
University of Minnesota	Pediatric	USPS
University of Nebraska Medical Center	Adult	Email
University of Texas Health Science Center at San Antonio	Pediatric	USPS
University of Texas Southwestern Medical Center	Pediatric	Email
University of Wisconsin-Madison	Adult and pediatric	Portal

^aEmail: electronic mail on file; portal: patient portal feature of the electronic medical record system; USPS: United States Postal Service.