Description: Great Mississipp River Race for Rett Syndrome 2001, Mississippi River Challenge for Rett Syndrome and Leukodystrophy 2003, The Double Helix flagship for Rett Syndrome
mississippi river (64) rett syndrome (10) leukodystrophy (3) verlen kruger (2) the double helix (1) guinness record for mississippi river (1) bob bradford (1) clark eid (1) stan hanson (1) world records for rett syndrome (1)