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Table 5 Primary search strategy for MEDLINE

From: Treatment of idiopathic pulmonary fibrosis: a network meta-analysis

# Search strategy
1 exp pulmonary fibrosis/
2 exp Fibrosis/
3 exp Respiratory Tract Diseases/
4 exp Respiratory System/
5 3 or 4
6 and 5
7 1 or 6 [PF Subject Headings]
8 ((lung$ or respir$ or pulmonary or alveol$) adj6 (fibros$ or fibrotic or fibrous)).tw.
9 (Cystic adj fibro$).mp.
10 8 not 9 [Cystic Fibrosis articles eliminated]
11 (idiopa$ adj2 pulmonary adj2 fibro$).tw.
12 Idiopathic Pulmonary Fibrosis/
13 ipf.mp. and (idiopa$ or pulmonary).tw.
14 11 or 12 or 13 [Add IPF back in]
15 7 or 10 or 14 [PF Subject Headings -- Lung/Fibrosis Textword terms]
16 (interstitial$ adj3 (fibros$ or fibrotic or fibrous)).tw.
17 5 and 16 [Respiratory Subject Headings -- interstitial fibrosis Textword terms]
18 14 or 17 [PF Subject headings -- PF Textwords]
19 (((usual or ordinary) adj3 interstitial) and pneumo$).tw.
20 (cryptog$ and (fibros$ or fibrotic or fibrous) and alveol$).tw.
21 idiopa$ interstitial pneumoni$.tw.
22 19 or 20 or 21 [Other textwords used to describe IPF]
23 Lung Diseases, Interstitial/ or (interstitial adj lung adj disease$).tw. or (parenchymal.tw. and (lung$ or pulmonary)).tw.
24 (((unknow$ or uncertain$) adj4 (origin$ or cause$ or aetiol$ or etiol$)) or idiopa$).tw.
25 23 and 24 [Concept to describe idiopathic disease concept of ILD]
26 18 or 22 or 25 [PF Subject headings -- PF Textwords -- IPF Textwords]
27 limit 26 to human [must be indexed with human (animal could be included]
28 limit 26 to animal [must be indexed with animal (human could be included)]
29 26 not 27 not 28 [citations not indexed with human or animal]
30 27 or 29 [limited to human (may include animals) or citations without animal/human limits]
31 201404$.dp,ed,ep.
32 201405$.dp,ed,ep.
33 31 or 32
34 30 and 33
35 limit 34 to english language
36 limit 34 to abstracts
37 35 or 35