1	characteristic*.tw.
2	manifest*.tw.
3	symptom*.tw.
4	cough*.tw.
5	headache.tw.
6	“Chest pain”.tw
7	Breathlessness.tw
8	“runny nose”.tw.
9	“Chest tightness”.tw
10	clinical sign*.tw.
11	fever.tw.
12	temperature.tw.
13	“head bobbing”.tw
14	Cyanosis.tw
15	“pursed lip*”.tw
16	“nasal flaring”.tw.
17	coryza*.tw
18	stridor.tw.
19	mucus.tw
20	sputum.tw
21	dyspnoea.tw
22	“Short* of breath”.tw
23	“intercostal recession”.tw.
24	tachypnoea.tw
25	hyperpnoea.tw
26	wheez*.tw.
27	crepitation*.tw.
28	“pleural rub”.tw
29	“bronchial breathing”.tw
30	crackles.tw
31	ronchi.tw
32	“vocal resonance”.tw
33	fremitus.tw
34	“peak flow”.tw
35	“oxygen saturation”.tw
36	sats.tw
37	1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35 or 36
38	diagnos*.tw.
39	role.tw.
40	cause.tw.
41	effect.tw.
42	significance.tw.
43	importance.tw.
44	predict*.tw.
45	rule.tw.
46	manifest*.tw
47	judgement.tw
48	judgment.tw
49	38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48
50	bacterial infections/
51	“chlamydia pneumonia*”.tw.
52	“chlamydophila pneumonia*”.tw.
53	“c pneumonia*”.tw.
54	“mycoplasma pneumonia*”.tw.
55	“m pneumonia”.tw.
56	“bordetella parapertussis”.tw.
57	“b parapertussis”.tw.
58	“bordetella pertussis”.tw.
59	“b pertussis”.tw.
60	“staphylococcus aureus”.tw.
61	“staph aureus”.tw.
62	“s aureus”.tw.
63	beta haemolytic streptococc*.tw.
64	“beta hemolytic streptococc*”.tw.
65	“moraxella catarrhalis”.tw.
66	“m catarrhalis”.tw.
67	“influenza*”.tw.
68	“streptococcus pneumonia*”.tw.
69	“strep pneumonia*”.tw.
70	“s pneumonia*”.tw.
71	virus diseases/
72	rsv.tw.
73	“respiratory syncytial virus”.tw.
74	parainfluenzavirus.tw.
75	metapneumovirus.tw.
76	adenovirus.tw.
77	coronavirus.tw.
78	rhinovirus.tw.
79	enterovirus.tw.
80	parechovirus.tw.
81	bocavirus.tw.
82	50 or 51 or 52 or 53 or 54 or 55 or 56 or 57 or 58 or 59 or 60 or 61 or 62 or 63 or 64 or 65 or 66 or 67 or 68 or 69 or 70 or 71 or 72 or 73 or 74 or 75 or 76 or 77 or 78 or 79 or 80 or 81
83	croup.tw.
84	respiratory tract infection/
85	bronchitis.tw.
86	common cold/
87	cough.tw.
88	bronchiolitis.tw.
89	sinusitis.tw
90	rhinitis.tw
91	pertussis.tw
92	“whooping cough”.tw38 diagnos*.tw.
93	pneumonia.tw
94	flu.tw
95	Influenza.tw
96	tracheitis.tw
97	empyema.tw
98	broncopneumonia.tw
99	83 or 84 or 85 or 86 or 87 or 88 or 89 or 90 or 01 or 02 or 93 or 94 or 95 or 96 or 97 or 98
100	37 and 49 and 82 and 99
101	limit 100 to (English language and humans and all child [0 to 17 years])