Dear friends, Am attaching for you Goljan Audio files to this post. These are MP3 files, in low-quality so that to get smaller sizes for easier download, download one of them and see if you like it to download the others. Will be uploading more gradually :)

Commonly tested in USMLE when you will be presented with an audio file that sounds like the attached MP3 file below. This is pleural friction rub and the causes are; Pulmonary embolism Bacterial pneumonia Tuberculosis Pleurisy Previous thoracic surgery SLE Lung cancer Asbestosis Radiation therapy