The Vel weak phenotype is due to a heterozygous deletion in the same exon, resulting one functional copy of the SMIM1 gene. If a patient who is Vel negative is transfused with Vel positive red blood cells, they may form anti-Vel alloantibodies.
Hearing aids need to be fitted by someone trained specifically in hearing problems. An audiologist or licensed hearing aid provider can make sure your hearing aids fit and work for your type and degree of hearing loss. You also need to consider cost.
How much do hearing aids cost? Are you interested in hearing aid prices? The cost of hearing aids depends on the level of technology in the devices. There are three main technology levels designed to meet the needs of people with mild, moderate, and severe hearing loss.