Recruitment Strategies, Response Rates, and Non-Response Patterns in a Nationwide Registry-Based PRO Survey of Cancer Survivors and the General Population: The SURV-ICE Cohort. - Sigurðardóttir, Kristjana; Friðriksdóttir, Nanna; Kristinsdóttir, Nanna Margrét; Kristjánsdóttir, Lára; Skúlason, Hjalti Gunnlaugur; Haraldsdóttir, Álfheiður; Alfonsdóttir, Sigríður Ása; Jóhannesdóttir, Anna Kristín B.; Birgisson, Helgi; Tryggvadóttir, Helga; Birgisdóttir, Freyja; Valdimarsdóttir, Heiðdís; et al. (Cancers, 2026)