Article: PDF OnlyHearing aid design and fitting solutions for persons with severe-to-profound lossesKuk, Francis K.; Ludvigsen, Carl Author Information Francis K. Kuk, PhD, is Director of Audiology, Widex Hearing Aid Company, USA. Carl Ludvigsen, MS, is Director of Audiological Reserarch at Widex ApS, Denmark. Correspondence to Dr. Kuk at Widex, 35–53 24th St., Long Island City, NY 11106. The Hearing Journal 53(8):p 29-30, 32, 35-37, August 2000. Free © 2000 Lippincott Williams & Wilkins, Inc.