Horizonte sanitario On-line version ISSN 2007-7459Print version ISSN 1665-3262
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CHACON-ANDADE, Edgardo René et al. Sleep disorders in university students during COVID-19: United States of America, Mexico and El Salvador. Horiz. sanitario [online]. 2023, vol.22, n.1, pp.199-205.
Epub Dec 16, 2022. ISSN 2007-7459.
