Thema
Research Support, Non-U.S. Gov't
Journal Article
2.815
primary health care
1.191
Primary Health Care
826
Primary health care
678
Health Services
497
Health
496
Delivery Of Health Care
490
Developing Countries
427
Population
339
Demographic Factors
334
Research Methodology
303
Population Characteristics
268
Diseases
239
Randomized Controlled Trial
239
Studies
211
Maternal-child Health Services
205
Africa
190
Research Report
189
Organization And Administration
176
Age Factors
173
Review
170
Africa South Of The Sahara
167
Population Dynamics
165
Programs
165
Biology
164
Asia
155
Multicenter Study
142
Immunization
141
Comparative Study
140
Youth
138
Physiology
130
Maternal Health Services
125
Observational Study
124
Program Evaluation
118
Americas
115
general practice
112
Economic Factors
111
English Speaking Africa
111
Systematic Review
107
Mortality
103
Prenatal Care
102
Research Support, N.I.H., Extramural
99
Klinische Studie
91
qualitative research
91
North America
90
Nutrition
89
Research Support, U.S. Gov't, Non-P.H.S.
89
Developed Countries
88
Evaluation
84
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