Kumar Utsav

copd bronchogenic carcinoma biomarkers cancer lung cancer gold gina guidelines copd guidelines gold 2022 copd gold 2022 tuberculosis ild respiratory diseases nutrition ventilation ventilatory lv failure rv failure cardiogenic pulmonary oedema chf oxygen therapy bipap cpap heart failure tumour markers markers drug drug overuse drug resistance antibiotic resistance antibiotic misuse antibiotics spirometry presentation lung function testing pulmonary function impairment lung function test pulmonary function test spirometry update of 2017 gina asthama asthma