pcTable.setWidget(rowIdxPcObserv, 1, listBoxObs);
pcTable.getFlexCellFormatter().setColSpan(rowIdxPcObserv, 1, 2);
listBoxObs.addItem(c.Standard());
listBoxObs.addItem(c.Standard_no());
listBoxObs.addItem(c.Standard_all());
listBoxObs.addItem(c.Only_amides_a());
listBoxObs.addItem(c.Only_amides());
listBoxObs.addItem(c.All_theoretic());
listBoxObs.addItem(c.All_non_hydro());
listBoxObs.setWidth("6em");