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Bronchial reactions to exposure to welding fumes.
Contreras GR, Chan-Yeung M. Contreras GR, et al. Occup Environ Med. 1997 Nov;54(11):836-9. doi: 10.1136/oem.54.11.836. Occup Environ Med. 1997. PMID: 9538358 Free PMC article.
Occupational medicine in Chile.
Contreras GR, Dümmer W. Contreras GR, et al. Int Arch Occup Environ Health. 1997;69(5):301-5. doi: 10.1007/s004200050151. Int Arch Occup Environ Health. 1997. PMID: 9192212 No abstract available.