Table 1 Searched strategy for PubMed

PubMed was searched from 1 January 1900 to 9 April 2018, using the following search strategy

1. “Lung Diseases, Interstitial”[Mesh] OR Pulmonary Fibrosis* [tiab] OR Idiopathic Interstitial Pneumonias* [tiab] OR pulmonary sarcoidosis* [tiab] OR Interstitial Lung Disease* [tiab] OR Interstitial Pneumonia* [tiab] OR lung fibrosis* [tiab] (n = 74,124)

2. Gene (n = 2,439,236)

3. “1900/01/01”[Date - Publication]: “2018/04/9”[Date - Publication] (n = 28,223,179)

4. 1 AND 2 AND 3 (n = 4036)

5. Review [ptyp] OR meta-analysis [ptyp] OR editorial [ptyp] OR practice guideline [ptyp] OR case reports [ptyp] (n = 4,613,012)

6. 4 NOT 5 (n = 3253)