The twin sister of a newborn who died at a Corpus Christi, Texas hospital has died following a suspected overdose of the blood-thinner Heparin. Twins, Kay Lynn and Keith Garcia, born one month premature, were among 14 babies receiving a dosage up to 100 times the recommended level of the anti-coagulant while in the neonatal intensive care unit. Whether the drug led to their death is unclear at this time.