The ptsd clinic I am going through had me file for a ptsd claim. The doctor and social worker both said I have ptsd and it is in my medical records as having ptsd. I asked the doctor to write a letter for my ptsd claim stating that it is more likely than not from my mst in service. He said that it isn't his job to do that and that the C&P doctors will do that. Is this true or what do I need to do?