hi i have cleared combined medical services 2013 and expecting to get indian railway medical services.the problem is that i hav also qualified for postgraduation this year.as the appointment usually takes 1 yr to come,so i m thinking of applying for extension.so i just want to know the procedure for applying extension.to whom should i write the application???and should i send it by post????waht is the deadline for sending such an application after getting the appointment letter????do we need to join the training at railway institute at vadodara for applying for extension?????if so please mention the address too of the railway director to whom i should apply for leave.......please anyone clarify it.........................