Tony Attwood - What is PDA? Introduction The term PDA stands for Pathological Demand Avoidance and was first coined by Elizabeth Newson, a developmental psychologist, in the 1980s in the UK. She
![Echocardiographic frames showing large window-type PDA (a Parasternal... | Download Scientific Diagram Echocardiographic frames showing large window-type PDA (a Parasternal... | Download Scientific Diagram](https://www.researchgate.net/profile/Ramon-Bermudez-Canete/publication/282469636/figure/fig5/AS:293054897508398@1446881140852/Echocardiographic-frames-showing-large-window-type-PDA-a-Parasternal-short-axis-view-b_Q320.jpg)
Echocardiographic frames showing large window-type PDA (a Parasternal... | Download Scientific Diagram
![What does PDA. mean? - Definition of PDA. - PDA. stands for Abr. Personal digital assistant, any of a number of electronic devices that can store a variety of data and/or act What does PDA. mean? - Definition of PDA. - PDA. stands for Abr. Personal digital assistant, any of a number of electronic devices that can store a variety of data and/or act](http://acronymsandslang.com/acronym_image/2573/6baaf8e15e0c8cc877db9fd996dffa26.jpg)