Formerly Conjoined Twins Thrive Post-Separation Doctors have given a clean bill of health to two-year-old twins who were born attached at the chest and abdomen and who underwent separation surgery at Stanford University's Lucile Packard Children's Hospital six months ago. Angelina and Angelica Sabuco were the guests of honor at a coming out party Monday attended by some of the 40 doctors and nurses who cared for them during last fall's 10-hour surgery and two-week hospital stay. Wearing matching pink dresses and different colored hair bows, the California toddlers looked like any other pair of identical twins. Angelina slept the entire time in her aunt's arms, while Angelica shyly rebuffed her mother's entreaties to sing for her well-wishers. Plastic surgeon Peter Lorenz, who implanted custom-made plates in each sister's chest to make up for their missing sternums, says their bodies are healing right on track and will continue to outgrow the evidence they once were conjoined.