Hi Adigautam,
I have to disagree with you. Upfront Medicals can be done before ITA. That's not a problem at all. I know many of my friends who did medicals before ITA but faced no problems absolutely whatsoever in their application processing. And I confirmed it clearly with a panel clinic as a friend of mine works as a panel physician. In fact when I did my processing I booked appointments before ITA but coincidentally ITA came before my medicals.
As a proof I am attaching a link and a screenshot from this forum about a discussion thread where two members talk about doing medicals before ITA.
Please don't get offended by this. You are free to share your opinions but when facts are needed do not share your opinions as facts.
Thanks,
Luder
http://www.canadavisa.com/canada-immigration-discussion-board/upfront-medical-exam-before-ita-t427848.0.html