Figure 1

Step-up procedure of protocol proposal of the endobronchial infusion of ADSCs in patients with IPF starting with patients' screening and enrolment and ending with follow-up period. Abbreviations: 6MWT: 6-minute walking test, ABGs: Arterial blood gases, ADSCs: Adipose-derived stem cells, CAT: Cough Assessment Test, DL_CO: Diffuse Lung Capacity for carbon monoxide FVC: Forced Vital Capacity, HRCT: High Resolution Computed Tomography, MRC: Medical Research Council- SGRQ: Saint George's Research Questionnaire, UIP: Usual Interstitial Pneumonia (histologic or radiologic)