 Patient who fulfills inclusion criteria will be contacted prior to surgery by a research team member. Details of the study and risks and benefits will be explained to the patient. After obtaining consent the patient will be randomized to one of two groups - standard wound treatment or negative pressure treatment - by senior research team member. depending on the randomisation patient will recived appropriate dressing. Surgical wound will be asses on day 2 to 4, on day 7 and on day 30. Prior to first dressing application, after 2-4 days and on day 30 a wound swap will be obtain for CS. Any wound complication will be recorded in research evaluation form. 