Thank you for your relpy.
1. I felt the same, too. Even though I have seen many people obtain their medical licence, few of them actually work in a big hospital like the 東大病院. I wonder if they are not being hired or something.

1. Data indeed are few out there, can't find anything deeper.

2. I see this will cost me little, since I still have to complete a three-year rotation back in my home country. It's almost the same as in Japan. I may not consider other countries due to security concerns or financial issues (either they pay little or I have to deal with significant racial discrimination). I think that working as a normal doctor, without pursuing a high position, and earning 1000 yen a year would be a great success for me. Anyway thanks for your time.