aPAP	Autoimmune pulmonary alveolar proteinosis
BAL	Bronchoalveolar lavage
CT	Computed tomography
FHP	Fibrotic hypersensitivity pneumonitis
FVC	Forced vital capacity
GMAb	Anti-granulocyte-macrophage colony-stimulating factor autoantibodies
GM-CSF	Granulocyte-macrophage colony-stimulating factor
GGO	Ground-glass opacity
HP	Hypersensitivity pneumonitis
PS	Periodic acid-Schiff
SLB	Surgical lung biopsy
SOB	Shortness of breath
KL-6	Krebs von den Lungen-6
PSL	Prednisolone
LTOT	Long-term oxygen therapy
AZP	Azathioprine
Ab	Antibody