You can manipulate variables of interest. https://www.nejm.org/doi/full/10.1056/NEJMp2209472?query=TOC&cid=NEJM%20eToc,%20October%206,%202022%20DM1523819_NEJM_Non_Subscriber&bid=1196741949
Anyone have an opinion on these Sig electronic hearing protection? Other good brands?
https://goaxil.com/pages/gsextreme-sigsauer?utm_source=facebook&utm_medium=paid_social&utm_campaign=pr&utm_term=sigpcmstatic7