Correction to: SARS-CoV-2 PCR-positive and PCR-negative cases of pneumonia admitted to the hospital during the peak of COVID-19 pandemic: analysis of in-hospital and posthospital mortality

oleh: Abduzhappar Gaipov, Arnur Gusmanov, Anara Abbay, Yesbolat Sakko, Alpamys Issanov, Kainar Kadyrzhanuly, Zhanar Yermakhanova, Lazzat Aliyeva, Ardak Kashkynbayev, Iklas Moldaliyev, Byron Crape, Antonio Sarria-Santamera