Hu, J.; Li, Z.; Li, S.; Li, H.; Wang, S.; Wang, S.; Xu, L.; Yang, D.; Ruan, T.; Li, H.; Han, S.; Gong, Q.; Han, L. Skipping Breakfast and Physical Fitness Among School-Aged Adolescents. Clinics 2020, 75, e1599. https://doi.org/10.6061/clinics/2020/e1599.