Vitamin D deficiency and low hemoglobin level as risk factors for severity of acute lower respiratory tract infections in Egyptian children: A case-control study
Abeer, S. E. S., Safaa, S. I., Hanaa, A. A., Samah, A. M. (2014). Vitamin D deficiency and low hemoglobin level as risk factors for severity of acute lower respiratory tract infections in Egyptian children: A case-control study. Egyptian Pediatric Association Gazette. https://doi.org/10.1016/j.epag.2013.12.001