Keyword Analysis & Research: what is a pmid in a citation

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is a pmid in a citation	0.31	0.1	3849	30	28
what	1.15	1	2073	93	4
is	0.15	0.5	4989	82	2
a	1.06	1	8775	9	1
pmid	0.87	0.7	9518	18	4
in	1.11	0.3	6091	18	2
a	1.32	0.7	2681	66	1
citation	0.47	0.1	9692	34	8

Keyword	CPC	PCC	Volume	Score
what is a pmid in a citation	0.95	0.7	4507	58