主题词：Cancer-related molecular mechanisms research; MicroRNA in disease regulation; Medical Research and Treatments; Reproductive Biology and Fertility; Liver Disease Diagnosis and Treatment; Circular RNAs in diseases; COVID-19 Clinical Research Studies; Respiratory Support and Mechanisms; Cardiac Health and Mental Health; Reproductive Health and Technologies; Neurological Disorders and Treatments; Cardiac Imaging and Diagnostics; Acute Myocardial Infarction Research; Long-Term Effects of COVID-19; Neurological Disease Mechanisms and Treatments; Sperm and Testicular Function; Ovarian function and disorders; Multiple Myeloma Research and Treatments; Cardiac, Anesthesia and Surgical Outcomes; Chronic Obstructive Pulmonary Disease (COPD) Research; Dialysis and Renal Disease Management; Obstructive Sleep Apnea Research; Intensive Care Unit Cognitive Disorders; Assisted Reproductive Technology and Twin Pregnancy; Diet and metabolism studies