GHR and ganglioneuroma: According to COVID-19 severity, the distribution of participants among the groups was 4 (GN), 4 (GHR), and 3 (GH) for mild severity; 11 (GN), 12 (GHR), and 17 (GH) for moderate; 3 (GN), 0 (GHR), and 1 (GH) for severe; and 3 (GN), 2 (GHR), and 1 (GH) for critical.