Evaluation of Frequency and Type of Severe Anemia in Patients Referred to the Baqiyatallah Hospital in Tehran in Six Months; A Descriptive Cross-Sectional Study. ijsmr [Internet]. 2022 Sep. 19 [cited 2026 Jun. 16];11:82-7. Available from: https://lifescienceglobel.com/index.php/ijsmr/article/view/8817