(CNN) -- She's built her career caring for orphans. 

Jane Aronson has evaluated more than 10,000 adopted children from around the world. Her patients include the offspring of Hollywood luminaries. An infectious disease specialist, she treated Angelina Jolie's daughter Zahara, who was critically ill when the actress brought her home from Ethiopia. 

In her new book, "Carried in Our Hearts: The Gift of Adoption: Inspiring Stories of Families Created Across Continents," Aronson curates a collection of stories written by many of the families she helped to unite. The actress Mary-Louise Parker shares the moment she first met her daughter in an Ethiopian orphanage. "Grey's Anatomy" creator Shonda Rhimes remembers crying in a Detroit hospital parking garage, overcome with emotion while waiting for her adopted daughter's birth. 

The book is also a family affair for Aronson. Her two adopted sons contribute their own recollections of how they became a family. Des Aronson, now almost 15 years old, shares an anecdote about getting lost soon after meeting his new mother when he was 5. Elevator doors closed unexpectedly at the Hilton Hotel in Addis Ababa, Ethiopia, sending the new family into a panic across hotel floors. 

But "Carried in Our Hearts" is about more than the orphans who found their way to loving homes. It also includes a heart-wrenching reminder of the children left behind. The number of international adoptions has plummeted by more than 60% from its peak of 22,991 in 2004. 

More than 90% of Aronson's young patients were adopted internationally. In her work as a doctor, and as an advocate for children without families, she has witnessed brutal treatment of orphans in many parts of the world. She also knows the potential these children have to succeed, with education, attention and love. 
What is her career built on?
She's built her career caring for orphans.