dr.keyf, ramadan kareem too
You should know when humanitarian aid organizations request work experience, or when put you thru waiting period, they are not seeking for a doctor recently or they don't need you so badly.
Also the location you would like to work plays a major role for you to get a job, for example in Somalia, some aid organizations use nurse consultants as medical doctors, they are allowed to see patients, take history, do examinations, send investigations, and give treatments without supervision.
I know doctors who recently graduated & working in Somalia without work experience...
So I say work experience is no longer obstacle if you want to work in certain places like Somalia.
thanks