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Associations between air pollution and relative leukocyte telomere length among northern Swedish adults based on findings from the Betula study

Study populationThe Betula cohort is a longitudinal, population-based study on dementia, memory and ageing which was initiated in 1988 to...

Traditional Chinese medicine interventions based on meridian theory for pain relief in patients with primary dysmenorrhea: a systematic review and network meta-analysis

1 Introduction Primary dysmenorrhea (PD) refers to the occurrence of menstrual cramps in the lower abdomen, without any identifiable pelvic...