Perspectives of adolescents from low-income households in Berlin—nutrition described by food affordability, household routines and autonomy: results from an exploratory qualitatively-driven mixed-methods study of cases - Sarah B. Blakeslee; Anne Schirmaier; Lara Steyer; Steven Ngandeu Schepanski; Georg Seifert; Wiebke Stritter; Gonza B. Ngoumou (Frontiers in Public Health, 2026)