Obstructive sleep apnea central sleep apnea searching

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Keyword	CPC	PCC	Volume	Length string	Score
obstructive sleep apnea central sleep apnea	1.71	0.7	7812	43	12
what is obstructive sleep apnea	1.14	0.4	3169	31	17
obstructive vs central sleep apnea	0.18	1	7890	34	12
central sleep apnea versus obstructive	0.65	0.5	2390	38	39
obstructive sleep apnea disorder	0.08	0.2	3815	32	30
obstructive sleep apnea patient info	0.55	0.5	6438	36	79
obstructive sleep apnea article	1.03	0.8	7435	31	91
obstructive sleep apnea wiki	0.41	1	5796	28	33
obstructive sleep apnea description	0.59	0.4	8046	35	12
obstructive sleep apnea syndrome	1.26	0.6	1344	32	27
significant obstructive sleep apnea	1.25	0.2	1305	35	10
severe obstructive sleep apnea	0.38	0.4	533	30	49
obstructive sleep apnea of adult	1.41	0.3	267	32	20

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