Surgeons at Primary Children's Medical Center plan to separate the baby girls June 18, in a procedure that's expected to be quite straightforward and last about five or six hours. Monday, they introduced the family to the media. Scott G. Winterton, Deseret Morning News
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Allyson, left, and Avery Clark are joined at the lower back. The 7-month-old girls will undergo surgery June 18 at Primary Children's Medical Center. Scott G. Winterton, Deseret Morning News
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Big sister Rylee Clark, 6, helps take care of Allyson and Avery Monday as the family met with members of the media. Scott G. Winterton, Deseret Morning News
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Big sister Rylee Clark, 6, plays with Allyson and Avery. The twins will sometimes hold hands or make faces to entertain each other. Scott G. Winterton, Deseret Morning News
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Kerry Clark holds his daughters Allyson, left, and Avery while Anna Clark holds daughter Ryan. Kerry Clark transferred to Hill Air Force Base so the family could be near Primary Children's Medical Center. Scott G. Winterton, Deseret Morning News
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The girls are usually peaceful, as Allyson, arms outstretched, is dominant. If Avery fusses a little, it doesn't disturb her twin's calm, although when she fusses herself, Avery's more apt to react and sympathize. Scott G. Winterton, Deseret Morning News
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Dr. Faizi Siddiqi, a plastic and reconstructive surgeon, recently performed a procedure in May where he implanted six tissue expanders under the twins' skin to stretch to create more to cover the wounds from surgery. Scott G. Winterton, Deseret Morning News