sentences:  At the time, it was envisioned as a central source for all the medical information about a child, especially those with special needs.Efforts by Calvin C.J.Sia, MD, a Honolulu-based pediatrician, in pursuit of new approaches to improve early childhood development in Hawaii in the 1980s laid the groundwork for an Academy policy statement in 1992 that defined a medical home largely the way Sia conceived it