ies[සංස්කරණය]The Institute of Trichologists, at over 100 years old is the oldest professional association for trichologists in the world. Registered members of The Institute of Trichologists indicate this with the postnominal letters AIT, MIT or FIT after their names (designating, respectively, an Associate Member, Member or Fellow of the Institute). The International Association of Trichologists (IAT), a non-profit corporation, offers a course developed at the University of Southern California in 1974, and trains most students from several countries. IAT presently has students in Australia, Botswana, Brazil, China, India, Japan, Kenya, Mauritius, New Zealand, Nigeria, Singapore, South Africa, South Korea, Sri Lanka, Taiwan and the West Indies.  The IAT course is also offered in India at the Mumbai Educational Trust (MET). Both the IAT and MET offer special condensed courses for medical doctors. Clinical training is offered in Australia, America, Brazil, Latvia and India. An IAT Int