Funding:
The study was funded by:
- Project PI20/00095, from the Instituto de Salud Carlos III (Ministry
of Economy, Industry and Competitiveness) and cofounded by the
European Regional Development Fund; and by SERMAS-Fundación para la
Investigación Biomédica del Hospital 12 de Octubre.
- Carlos Grasa is funded by the Spanish Ministry of Science and
Innovation—Instituto de Salud Carlos III and Fondos FEDER (Contrato
Río Hortega CM19/00015).
- Juan Miguel Mesa is funded by SERMAS-Fundación para la Investigación
Biomédica del Hospital Infanta Sofía y del Henares.
The funders had no role in study design, data collection and analysis,
decision to publish, or preparation of the manuscript.
Keywords: Clinical features, SARS-CoV-2, pneumonia in children,
chest X-ray, severity.