Further tidy up required 

The lead paragraph says that this is a list of "major" hospitals in Karachi. I have discussed the list with a colleague who did her medical training in Karachi. She says that the Public Institutions are major hospitals and that most of the Dental Surgeries are not. She went through the list of Private Institutions and marked the ones she knew to be major - unfortunately I can't do anything to the article based on her list as that would be WP:OR. I haven't deleted any of the institutions and we really need someone who has the time (and reads Urdu) to go through the list and look for sources. I have tidied up the mixture of bold and non-bold text and have removed addresses where I could. I have also heavily cut the Dental Surgeries to just the three that appear to be hospitals.