Kroon, David F.; et al. (2002). "Surfer's ear: External auditory exostoses are more prevalent in cold water surfers". Otolaryngology–Head and Neck Surgery. 126 (5): 499–504. doi:10.1067/mhn.2002.124474. PMID12075223. S2CID25348240.
Kroon, David F.; et al. (2002). "Surfer's ear: External auditory exostoses are more prevalent in cold water surfers". Otolaryngology–Head and Neck Surgery. 126 (5): 499–504. doi:10.1067/mhn.2002.124474. PMID12075223. S2CID25348240.
Kroon, David F.; et al. (2002). "Surfer's ear: External auditory exostoses are more prevalent in cold water surfers". Otolaryngology–Head and Neck Surgery. 126 (5): 499–504. doi:10.1067/mhn.2002.124474. PMID12075223. S2CID25348240.