INS and COVID-19: Insulin (fasting, median [IQR]): =C peptide (median [IQR]): highest in COVID-19: 3487 [1552-5756] vs 1436 [851-2819] vs 1437 [916-2014] pg/mLC-peptide/glucose ratio highest in COVID-19Insulin resistance: 57.6% vs 16.7% vs 8.3%β-cell failure: 35.6% vs 55.6% vs 25.0%