401638 RT Robertsonian translocation 21 1542614 ROB Robertsonian translocation 14 3374493 ROBs Robertsonian translocations 14 3785256 RobTs Robertsonian translocations 8 3374486 RobT Robertsonian translocations 7 1559837 RTs Robertsonian translocations 4 380057 Rb Robertsonian translocations 3 1514878 RbT Robertsonian translocations 3 3345468 RbTs Robertsonian translocations 2 1514629 Rbs Robertsonian translocations 1 1542613 Rob Robertsonian translocations 1