Original Research
Utilization evaluation of factor concentration and frequencyof bleeds among patients with haemophilia "A" and haemophilia "B" in northwest Iran
Roya Dolatkhah 1, Morteza Ghojazadeh 2 * , Iraj Asvadi Kermani 3, Zohreh Sanaat 4, Nasrin Tavassoli 5, Mehri Gholchin 6