NL-SH advisory board member. The NL-SH is the Netherlands Longitudinal Study on Hearing. It is a cohort that is maintained by Amsterdam UMC, location VUmc, Otolarynogology, Head, and Neck SUrgery, Ear & Hearing, Amsterdam, the Netherlands. The NL-SH focuses on determinants and consequences of hearing loss in adults aged 18-70 years old. It has a follow-up measurement every 5 years.