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SINGAPORE - The doctor at the centre of the lawsuit is well known in his field and has decades of experience.
In his defence, Dr Cheng Jun, who runs the Cheng Jun Gastroenterology & Medical Clinic at Mount Elizabeth Medical Centre, also listed his credentials.
He is regarded as a master endoscopist and has mentored many practising gastroenterologists.
He was the president of the Gastroenterological Society of Singapore from 1996 to 1998 and vice-president of the World Organisation of Gastroenterology from 1998 to 2002.
Dr Cheng said he has been a gastroenterologist since 1986, and has performed endoscopy - colonoscopy and gastronoscopy - from the time he became a registrar at the Singapore General Hospital (SGH).
Over the past 21/2 decades, he has worked on about 20,000 cases of colonoscopy in both clinic and hospital settings.
In a clinic setting, he has conducted the procedure on prominent people, young and old, from Singapore and the region, some of whom were fellow gastroenterologists, physicians and surgeons.
He has also given live demonstrations and talks on endoscopy in Singapore and cities such as Jakarta, Tokyo, Kuala Lumpur and Hyderabad.
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