Publisher: Pakistan Medical Association Country of Publication: Pakistan NLM ID: 7501162 Publication Model: Print Cited Medium: Internet ISSN: 0030-9982 (Print) Linking ISSN: 00309982 NLM ISO Abbreviation: J Pak Med Assoc Subsets: MEDLINE
Publisher: Elsevier Science Country of Publication: United States NLM ID: 0370500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1891 (Electronic) Linking ISSN: 00029394 NLM ISO Abbreviation: Am J Ophthalmol Subsets: MEDLINE