Respiratory Disease / Copper / Zinc / Iron / Nutritional Status / Preschool Children / Trace element / Chi Square Test / Reference Value / Age Groups / Preschool Children / Trace element / Chi Square Test / Reference Value / Age Groups
Health Promotion / Statistical Analysis / Health Education / Elementary Education / Drug Use / High School / Alcohol Drinking / Family Environment / Family Relations / Chi Square Test / Confidence Interval / Revista Paulista de Pediatria / High School / Alcohol Drinking / Family Environment / Family Relations / Chi Square Test / Confidence Interval / Revista Paulista de Pediatria
Social Class / Blood sampling / Heavy Metal / Basque country / Chromium / Multiple Linear Regression / Heavy Traffic / Public health systems and services research / Chi Square Test / General Population / Multiple Linear Regression / Heavy Traffic / Public health systems and services research / Chi Square Test / General Population
Adolescent / Mexico / Humans / Child / Female / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies
Social Class / Blood sampling / Heavy Metal / Basque country / Chromium / Multiple Linear Regression / Heavy Traffic / Public health systems and services research / Chi Square Test / General Population / Multiple Linear Regression / Heavy Traffic / Public health systems and services research / Chi Square Test / General Population
Adolescent / Mexico / Humans / Child / Female / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies
HUMAN PAPILLOMAVIRUS / Sexual Behavior / Data Collection / Sample Size / Public health systems and services research / University Student / Indexation / Chi Square Test / Virus Del Papiloma Humano / Cross sectional Study / Oral Contraceptive / University Student / Indexation / Chi Square Test / Virus Del Papiloma Humano / Cross sectional Study / Oral Contraceptive
Social Security / School Children / Public health systems and services research / Indexation / Chi Square Test / Low Income / Cross sectional Study / Parametric analysis / Iodine Deficiency / Low Income / Cross sectional Study / Parametric analysis / Iodine Deficiency
Adolescent / Mexico / Humans / Child / Female / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies / Iron / Prevalence / Middle Aged / Adult / Cross Section / Public health systems and services research / Ethnic Group / Breast feeding / Pregnant Women / MEXICO / Indexation / Chi Square Test / Iron Deficiency Anemia / Cross Sectional Studies