Keyphrases
Preterm Birth
100%
Vomiting
100%
Wuhan China
100%
First Trimester
100%
Birth Cohort Study
100%
Pre-pregnancy Body Mass Index
37%
Gestational Age
37%
Pregnant Women
25%
Gestational Week
25%
Multivariable
12%
Ultrasound
12%
First Day
12%
Retrospective Cohort Study
12%
Singleton
12%
Overweight Women
12%
Obese Women
12%
Stratified Analysis
12%
Central Cities
12%
Wuhan
12%
Last Menstrual Period
12%
China's Cities
12%
Medicine and Dentistry
Premature Labor
100%
Cohort Analysis
100%
First Trimester Pregnancy
100%
Body Mass Index
37%
Underweight
25%
Retrospective Cohort Study
12%
Neonatal Infant
12%
Obesity
12%
Menstrual Cycle
12%
Biochemistry, Genetics and Molecular Biology
First Trimester Pregnancy
100%
Cohort Study
100%
Body Mass
50%
Menstrual Cycle
16%
Pharmacology, Toxicology and Pharmaceutical Science
Premature Labor
100%
Cohort Study
100%
Underweight
25%
Obesity
12%