Correspondence to 'Risk factors for hospital admissions related to COVID-19 in patients with autoimmune inflammatory rheumatic diseases'. Issue 1 (30th October 2020) - Schulze-Koops, Hendrik; Skapenko, Alla; Krause, Andreas; Krueger, Klaus; Lorenz, Hanns-Martin; Sewerin, Philipp; Specker, Christof; Wagner, Ulf G; Voormann, Anna; Mueller-Ladner, Ulf; Voll, Reinhard E