{Reference Type}: Letter
{Title}: Chronic related group classification system as a new public health tool to predict risk and outcome of COVID-19 in patients with systemic rheumatic diseases: A population-based study of more than forty thousand patients.
{Author}: De Lorenzis E;Parente P;Natalello G;Soldati S;Bosello SL;Barbara A;Sorge C;Axelrod S;Verardi L;Cerasuolo PG;Peluso G;Gemma A;Davoli M;Biliotti D;Bruzzese V;Goletti M;Di Martino M;D'Agostino MA;
{Journal}: Joint Bone Spine
{Volume}: 90
{Issue}: 2
{Year}: 03 2023
{Factor}: 5.263
{DOI}: 10.1016/j.jbspin.2022.105497
{Abstract}: