Concept: Retrospective cohort study
Effect of individual and combined ambient air pollutants exposure on the risk of preeclampsia: a retrospective cohort study in Tangshan, China
Air pollution exposure windows and preeclampsia risk in Chinese pregnancies

Cardiac arrest as an extended indication for organ donation
Expanding organ donation after cardiac death and its limitations

Somatic health of women with a history of preeclampsia who delivered female infants
Long-term cardiovascular and metabolic health risks in women after preeclampsia

Identification of risk factors and construction of a nomogram for predicting postoperative stone recurrence in patients with infective upper urinary tract stones
Predicting which patients will develop stones again after surgery

Comparison of Mini-Percutaneous Nephrolithotomy and Flexible Ureteroscopy for Treating 1–2 cm Single Stones in Solitary Kidney: Outcomes and Renal Function Impact
Both methods achieve high success rates while preserving kidney function in high-risk patients

Retrospective Validation Of a Patient-Initiated Preconception Screener Against Obstetric Comorbidity Indices To Assess Pregnancy Complications
A tool for identifying pregnant patients at risk of serious complications before conception

CHD incidence in offspring of mothers with non-inherited and non-syndromic forms of CHD: a single-centre retrospective cohort study
Offspring of mothers with heart defects face elevated risk, though most cases remain mild.












