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Poland
Workload
Risk Factors
Health Status
Occupational Health
Pregnancy Outcomes
Pregnancy
Physical Exertion
Energy Metabolism
Occupational Exposure
Occupational Diseases
Heart Rate
Fatigue
Pregnancy Complications
Women, Working
Newborn Infant
Work Capacity Evaluation
Questionnaires
Occupations
Leisure Activities
Co-Publications
12
10
7
5
4
3
2
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