Clinical profile and hospital outcomes of children with Down syndrome diagnosed with congenital heart disease in a developing country: A retrospective study - Zawadi Edward Kalezi; Jimmy France Mchalange; Naizihijwa Gadi Majani; Alphonce Nsabi Simbila; Vivienne Aiyana Mlawi; Deogratias Arnold Nkya; Peter Richard Kisenge (PLoS ONE, 2026)