Paternina-Martínez Y-S, Pretel-Contreras H-P. Presence of somatic symptoms in girls and boys: a comparison between the period without examinations and with examinations. Búsqueda [Internet]. 2018 Dec. 17 [cited 2026 Nov. 7];5(21):231-9. https://doi.org/10.21892/01239813.424