#	Query
S51	S50 and S40
S50	S49 or S48 or S47 or S46 or S45 or S44 or S43 or S42 or S41
S49	(single* or double* or triple*) and blind*
S48	clinical* and (trial* or study or studies)
S47	crossover* or cross-over*
S46	random*
S45	placebo*
S44	(DE "PLACEBOS")
S43	(DE "RANDOM ALLOCATION")
S42	(DE "DOUBLE BLIND METHOD")
S41	(DE "RANDOMIZED CONTROLLED TRIALS")
S40	S39 or S33 or S28 or S22 or S14
S39	S38 or S37 or S36 or S35 or S34
S38	(DE "FIBROSIS")
S37	(DE "SARCOIDOSIS")
S36	((pulmonary* or lung*) AND (sarcoid* or granulom*))
S35	((pulmonary* or lung* or alveoli*) AND (fibros* or fibrot*)
S34	interstitial* AND (lung* or disease* or pneumon*)
S33	S32 or S31 or S30 or S29
S32	OSA or SHS or OSAHS
S31	sleep* n3 apnoea*
S30	sleep* n3 apnea*
S29	(DE "SLEEP APNEA SYNDROMES")
S28	S27 or S26 or S25 or S24 or S23
S27	bronchial* N3 dilat*
S26	ciliary N3 dyskinesia
S25	kartagener*
S24	bronchiect* or bronchoect*
S23	(DE "BRONCHIECTASIS")
S22	S21 or S20 or S19 or S18 or S17 or S16 or S15
S21	COPD or COAD or COBD or AECB
S20	(pulmonary or lung* or airway* or airflow* or bronch* or respirat*) and obstruct*
S19	chronic* N3 bronchiti*
S18	emphysema*
S17	(DE "PULMONARY EMPHYSEMA")
S16	(DE "BRONCHITIS")
S15	(DE "LUNG DISEASES OBSTRUCTIVE")
S14	S13 or S12
S13	bronchopulmonar* N3 aspergill*
S12	(S11 or S10 or S9 or S8 or S7 or S6 or S5 or S4 or S3 or S2 or S1)
S11	house dust mites
S10	(DE "RESPIRATORY HYPERSENSITIVITY")
S9	bronch* N3 constrict*
S8	bronchoconstrict*
S7	bronch* N3 spasm*
S6	bronchospas*
S5	wheez*
S4	(DE "RESPIRATORY SOUNDS")
S3	antiasthma* or anti-asthma	
S2	asthma*
S1	(DE "asthma")