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![](/siteassets/images/staff-headshots/leadership-headshots/meredith-irwin-headshot-300.jpg?height=450&width=133&mode=min&metadata=false&dt=637426934610000000)
Paediatrician-in-Chief, Department of Paediatrics
![](/siteassets/images/staff-headshots/khosrow-adeli-headshot-300.png?height=450&width=133&mode=min&metadata=false&dt=637406367090000000)
Division Head, Clinical Biochemistry
khosrow.adeli@sickkids.ca
Head, Division of Cardiovascular Surgery
david.barron@sickkids.ca
![Stephen Scherer in a white lab coat](/siteassets/images/staff-headshots/stephen-scherer-headshot-300.png?height=450&width=133&mode=min&metadata=false&dt=637443499370000000)
Chief of Research
chief.research@sickkids.ca
![Ryan Yuen Headshot](/siteassets/images/staff-headshots/ryan-yuen-headshot-300.png?height=450&width=133&mode=min&metadata=false&dt=637713802830000000)
Senior Scientist, Genetics & Genome Biology
ryan.yuen@sickkids.ca
![Headshot of Shi-Joon Yoo](/siteassets/images/staff-headshots/shi-joon-yoo-headshot-2023-300.png?height=450&width=133&mode=min&metadata=false&dt=638279757650000000)
Staff Cardiac Radiologist, Division of Cardiac Imaging, Department of Diagnostic Imaging
shi-joon.yoo@sickkids.ca
Senior Scientist, Neurosciences & Mental Health
cathy.barr@sickkids.ca
Head, Section of Gynaecology
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