Bongard F, Landers DV, Lewis F (1985). "Differential diagnosis of appendicitis and pelvic inflammatory disease. A prospective analysis". Am. J. Surg. 150 (1): 90–6. doi:10.1016/0002-9610(85)90015-7. PMID3160252.
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pubmed.ncbi.nlm.nih.gov
Bongard F, Landers DV, Lewis F (1985). "Differential diagnosis of appendicitis and pelvic inflammatory disease. A prospective analysis". Am. J. Surg. 150 (1): 90–6. doi:10.1016/0002-9610(85)90015-7. PMID3160252.