when did they stop using ether for anesthesia

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did they stop using ether for anesthesia	0.41	0.9	699	96	45
when	1.95	0.5	8628	23	4
did	0.88	0.3	8112	20	3
they	1.03	0.9	7946	46	4
stop	1.57	1	217	18	4
using	1.02	0.3	6515	33	5
ether	0.16	0.9	6285	44	5
for	1.37	0.2	6468	70	3
anesthesia	1.7	0.6	1078	92	10

Keyword	CPC	PCC	Volume	Score
when did they stop using ether for anesthesia	1.05	0.6	2237	48
when did they stop using ether	1.57	0.9	1685	72
when was ether first used as anesthesia	1.95	0.8	7378	63
when was ether used as an anesthetic	0.22	0.4	5368	45
when was ether discovered as anesthesia	1.15	0.5	9948	32
history of ether anesthesia	0.91	0.3	6665	55
when did ether stop being used	0.75	0.3	9885	52
when was ether stopped being used	1.53	0.4	5678	17
who invented ether anesthesia	0.26	0.1	1734	67
who discovered ether as an anesthetic	1.94	0.6	3864	22
what was ether anesthesia 1800s	1.48	1	8696	69
is ether still used in surgery	0.52	0.5	3373	44
how does ether work as an anesthetic	1.6	0.5	8240	1
open drop ether anesthesia	0.22	0.6	2806	86
stanford ether anesthesia pdf	1.25	0.9	8278	87
common ether solvent used as an anesthetic	1.51	0.1	9657	52