Serum 25-hydroxyvitamin D level is negatively associated with serum phosphorus level among stage 3a-5 chronic kidney disease patients Ahmed Fayed, Mahmoud M. El Nokeety, Ahmed A. Heikal, Khaled Marzouk, Hany Hammad, Dina O. Abdulazim, Mona M. Salem, Usama A. Sharaf El Din

Nitrogen and phosphorus recovery from hemodialysis wastewater to use as an agricultural fertilizer Faissal Tarrass, Hamza Benjelloun, Meryem Benjelloun

Impact of hepatitis virus infection on arterial calcification among incident hemodialysis patients Ahmed Fayed, Ahmed Soliman, Hossam El Mahdy, Wael Hamza, Dina O. Abdulazim, Mona M. Salem, Usama A. Sharaf El Din