Mark Stewart, Fundraising Department Head at The Children’s Hospital at Westmead, describes how it increased its Radiothon revenue to $1.2 million – with the help of its corporate partners. Lise Taylor reports.  Mark Stewart, Fundraising Department Head at The Children’s Hospital at Westmead, describes how it increased its Radiothon revenue to $1.2 million – with the help of its corporate partners. Lise Taylor reports. Naturally, The Children’s Hospital at Westmead, Sydney, often looks for ways to bring entertainment and fun activities into the hospital for its young patients and their families to enjoy. Radiothon, which was born in 2006, is its biggest event. Fundraising Department Head Mark Stewart says, “Although the telefundraising…