Need urgent B+ blood donation for 18M cancer patient

Hi, posting on my behalf of my friend whose little brother is a Leukemia patient. He's currently being treated in Kokilaben Dhirubhai Ambani Hospital, Andheri West. We urgently need B+ donors. Doctors have asked us to get 5 donors urgently. Please anyone who can donate blood DM me. If not, please help us to get some other reference but we need it really urgently!