Several contributions in this book tell of doctors' increasing emigration from developing countries where they are in critical shortage, especially from the underserved rural and public sectors of countries in sub-Saharan Africa (SSA) and South Asia. They point out the severe harm from that migration to some of the world's poorest and sickest populations who have no other doctors to turn to, and gain little from their emigration. Since significant harm to the badly off is bad, decline in that migration is usually a good development. But how to strive to achieve it?