The histogram of MeSH term frequency of Sampling Studies

MeSH term

Count
*Sampling Studies	1
Sampling Studies	181
*Petrosal Sinus Sampling	7
Chorionic Villi Sampling	50
Petrosal Sinus Sampling	1
*Chorionic Villi Sampling	24
Chorionic Villi Sampling/*methods	1
*Epidemiologic Studies	1
*Seroepidemiologic Studies	1
*Multicenter Studies	1
*Intervention Studies	1
*Cohort Studies	2
*Longitudinal Studies	4
Seroepidemiologic Studies	103
Intervention Studies	21
Feasibility Studies	222
Cohort Studies	2583
Follow-Up Studies	3504
Prospective Studies	4073
Retrospective Studies	3472
Longitudinal Studies	851
Multicenter Studies	121
Epidemiologic Studies	45
Twin Studies	18
Cross-Over Studies	609
Evaluation Studies	682
Time and Motion Studies	3
*Case-Control Studies	9
Multicenter Studies/*trends	1
Cross-Sectional Studies	1207
Multicenter Studies/standards	1
*Time and Motion Studies	1
Organizational Case Studies	2
Case-Control Studies	5140
Multicenter Studies/statistics & numerical data	2