The International Association for Surgical Metabolism and Nutrition IASMEN is a collective Member Society of the International Society of Surgery ISS/SIC. Membership application for IASMEN therefore has to go through the application process of ISS/SIC membership. Do not forget to indicate in the ISS/SIC application process that you wish to become IASMEN member as well.
The Link below leads you to the Membership Directory of the International Society of Surgery which includes IASMEN members. To seek specifically for a IASMEN Member in your country, select your country and Collective Member Society IASMEN and submit your request.