. . . . "Hywel Dda University Health Board" . . . . . . . . "local health board of south-west Wales" . . . . . . "Hywel Dda GP Out of Hours Service" . . . "Hywel Dda" . . . . . "Hywel Dda National Health Service Trust" . "Hywel Dda University Health Board" . "Hywel Dda Health Board" . . . .