Contribution to authorship:
Dr Nurul Islam and Dr Siddhartha Saha: Doing fetal echocardiography at main and peripheral centre, arranging fetal echocardiography camps, planning the study, data collection, family counselling, preparation of master chart, basic write up, ethical committee meeting, statistical analysis, communicating with other co-authors.
Dr Jheelam Mukherjee: Motivating the family for fetal echocardiography test and arranging delivery for high risk cases.Helping in write up and editing
Dr Mahua Roy and Dr Tasdiqul Islam :Doing fetal echocardiography in peripheral clinic and sharing data , helping in write up and editing.
Details of patient’s consent: All the relevant written consent has been taken from patients for publication
Funding: No funding was needed
Details of ethics approval: We put the study before ethical committee, as because it was only retrospective observational study, committee allowed us to continue the study without any need for ethical clearance.