Formerly conjoined twins thrive separately Angelina Sabuco, 2, far left, sleeps in the arms of her aunt Marites Sabuco as her mom Ginady, ...

Formerly conjoined twins thrive separately

Angelina Sabuco, 2, far left, sleeps in the arms of her aunt Marites Sabuco as her mom Ginady, center right, and twin sister Angelica, far right, look on at Lucile Packard Children's Hospital Monday, April 30, in Palo Alto, Calif. The twin sisters, who were born joined in the chest and abdomen, were separated by doctors at the Palo Alto hospital during an intricate 10-hour procedure on December 2011. (AP Photo/Marcio Jose Sanchez)

Angelina Sabuco, at left, is held by her mother Ginady Sabuco and twin sister Angelica, is held by aunt Marita Sabuco, at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. The twin sisters, who were born joined in the chest an abdomen, are preparing to go home after an intricate surgery by a group of Lucile Packard doctors to separate them. (AP Photo/Marcio Jose Sanchez)

Angelina Sabuco, at left, is held by her mother Ginady Sabuco and twin sister Angelica, is held by aunt Marita Sabuco, at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. The twin sisters, who were born joined in the chest an abdomen, are preparing to go home after an intricate surgery by a group of Lucile Packard doctors to separate them. (AP Photo/Marcio Jose Sanchez)

Angelica Sabuco, 2, plays with her mom Ginady at Lucile Packard Children's Hospital Monday, April 30, in Palo Alto, Calif. Angelica and her twin sister Angelina were born joined in the chest and abdomen. They were separated by doctors at the Palo Alto hospital during an intricate 10-hour procedure on December 2011. (AP Photo/Marcio Jose Sanchez) Angelina Sabuco, at left, is held by her mother Ginady Sabuco and twin sister Angelica, is held by aunt Marita Sabuco, at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. The twin sisters, who were born joined in the chest an abdomen, are preparing to go home after an intricate surgery by a group of Lucile Packard doctors to separate them. (AP Photo/Marcio Jose Sanchez) Angelina Sabuco, at left, is held by her mother Ginady Sabuco and twin sister Angelica, is held by aunt Marita Sabuco, at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. The twin sisters, who were born joined in the chest an abdomen, are preparing to go home after an intricate surgery by a group of Lucile Packard doctors to separate them. (AP Photo/Marcio Jose Sanchez) Ginady Sabuco, center, holds her daughter Angelina next to surgeon Gary Hartman, at right, at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. Angelina and twin sister Angelica, who were born joined in the chest and abdomen, are preparing to go home after an intricate surgery to separate them by a group of Lucile Packard doctors. (AP Photo/Marcio Jose Sanchez) Angelica Sabuco, center, is carried by her aunt Marita Sabuco and accompanied by family after a meeting with the press following surgery to separate her from her twin sister Angelina at Lucile Packard Children's Hospital, Monday, Nov. 14, 2011 in Stanford, Calif. The twin sisters, who were born joined in the chest an abdomen, are preparing to go home after an intricate surgery by a group of Lucile Packard doctors to separate them. (AP Photo/Marcio Jose Sanchez) less In this photo provided by Lucile Packard Children's Hospital, conjoined twins Angelina and Angelica Sabuco sit with their aunt Marita Sabuco before undergoing separation surgery on Tuesday, Nov. 1, 2011 in Stanford, Calif. Angelica and Angelina are classified as thoraco-omphalopagus, joined at the chest and abdomen. Their livers, diaphragms, breastbones, chest and abdominal wall muscles are fused. They have separate hearts, brains, kidneys, stomachs and intestines. If all goes according to plan, the 2-year-olds will be out of surgery by mid-afternoon. (AP Photo/Lucile Packard Children's Hospital)

In this photo provided by Lucile Packard Children's Hospital, surgeon Gary Hartman performs surgery on conjoined twins Angelina and Angelica Sabuco on Tuesday, Nov. 1, 2011 in Stanford, Calif. Hartman, who has done five separation procedures at medical centers around the U.S., said he expects the operation to go well. (AP Photo/Lucile Packard Children's Hospital)

Conjoined twins Angelica (R) and Angelina Sabuco (L) play a game with their mother Ginady (C) during a press conference at the Lucile Packard Children's Hospital at Stanford on October 31, 2011 in Palo Alto, California. Two year-old conjoined twins Angelica and Angelina Subaco who are connected at the chest and abdomen are preparing for separation surgery by Dr. Gary Hartman. The surgery will last between 6 and 8 hours that is followed by three hours of reconstructive surgery for each girl. (Photo by Justin Sullivan/Getty Images)

Conjoined twins Angelica (L) and Angelina Sabuco (R) ride on a wheelchair with their mother Ginady (C) before a press conference at the Lucile Packard Children's Hospital at Stanford on October 31, 2011 in Palo Alto, California. Two year-old conjoined twins Angelica and Angelina Subaco who are connected at the chest and abdomen are preparing for separation surgery by Dr. Gary Hartman. The surgery will last between 6 and 8 hours that is followed by three hours of reconstructive surgery for each girl. (Photo by Justin Sullivan/Getty Images)

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, May 1.