Passage: Since TRIPS came into force, it has been subject to criticism from developing countries, academics, and non-governmental organizations. Though some of this criticism is against the WTO generally, many advocates of trade liberalisation also regard TRIPS as poor policy. TRIPS's wealth concentration effects (moving money from people in developing countries to copyright and patent owners in developed countries) and its imposition of artificial scarcity on the citizens of countries that would otherwise have had weaker intellectual property laws, are common bases for such criticisms. Other criticism has focused on the failure of TRIPS to accelerate investment and technology flows to low-income countries, a benefit advanced by WTO members in the lead-up to the agreement's formation. Statements by the World Bank indicate that TRIPS has not led to a demonstrable acceleration of investment to low-income countries, though it may have done so for middle-income countries. Lengthy patent periods under TRIPs have been scrutinised for unduly slowing the entry of generic substitutes and competition to the market. In particular, the illegality of pre-clinical trials or submission of samples for approval until a patent expires have been blamed for driving the growth of a few multinationals, rather than developing country producers.

Question: What part of the world criticized TRIPS the most?
developing countries