Donors for Florida girl need 'O' or 'A' blood type, with parents 100% Pakistani, Iranian, or Indian
                                
                                
                                    (Newser) -
                                    A toddler in Florida has spurred a hunt for compatible blood donors, and the requirements are incredibly rigid. The little girl, identified as Zainab, 2, was diagnosed just a few weeks ago with  neuroblastoma , a rare kind of blood cancer that typically only strikes children ages 5 and younger,  WPLG...