200 quality health comments (dofollow, pr1+) needed monthly

I need 200 approved high quality genuine health comments for each month for my health blogs. I will give url and keywords. The comments should be like small articles. They must come from different tlds like (.[login to view URL], .info, .edu, .gov, .co.uk... -- health niche only). Some percent of comments should be of do follow and comment luv enabled etc sites. They are also from pr1+ sites. The job is long term (6 months+). The rate for 200 comments is 30$. I prefer people who have medical background (nurses, etc,.) and people who have good knowledge on blog commenting. I am not looking for scrapebox type of work.