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Baker,  \"Vet Rec.\"  140, \"Megabacteria in diseased and healthy budgerigars.\" 627 (1997)","DOI":"10.1136\/vr.140.24.627"},{"key":"14","doi-asserted-by":"crossref","unstructured":"NM Nemeth, V Gonzalez-Astudillo, PT Oesterle, et al.  \"J Comp Pathol.\"  155, \"A 5-year retrospective review of avian diseases diagnosed at the Department of Pathology, University of Georgia.\" 105 (2016)","DOI":"10.1016\/j.jcpa.2016.05.006"},{"key":"17","doi-asserted-by":"crossref","unstructured":"LV Powers, MA Mitchell, MM Garner,  \"Vet Pathol.\"  56, \"Macrorhabdus ornithogaster infection and spontaneous proventricular adenocarcinoma in budgerigars (Melopsittacus undulatus).\" 486 (2019)","DOI":"10.1177\/0300985818823773"},{"key":"5","doi-asserted-by":"crossref","unstructured":"H Beaufr\u00e8re, JG Nevarez, K Holder, et al.  \"Avian Pathol.\"  40, \"Characterization and classification of psittacine atherosclerotic lesions by histopathology, digital image analysis, transmission and scanning electron microscopy.\" 531 (2011)","DOI":"10.1080\/03079457.2011.607427"},{"key":"6","doi-asserted-by":"crossref","unstructured":"H Beaufr\u00e8re, D Reavill, J Heatley, et al.  \"Vet Pathol.\"  56, \"Lipid-related lesions in Quaker parrots (Myiopsitta monachus).\" 282 (2019)","DOI":"10.1177\/0300985818800025"},{"key":"1","doi-asserted-by":"crossref","unstructured":"MM Amer  and HM Mekky  \"Bulgarian J Vet Med.\"  23, \"Avian gastric yeast (AGY) infection (macrorhabgiosis or megabacteriosis).\" 397 (2020)","DOI":"10.15547\/bjvm.2019-0035"},{"key":"2","doi-asserted-by":"crossref","unstructured":"JR. Baker,  \"Vet Rec.\"  139, \"Causes of mortality and morbidity in exhibition budgerigars in the United Kingdom.\" 156 (1996)","DOI":"10.1136\/vr.139.7.156"},{"key":"4","unstructured":"LA. Bauck,  \"Proceedings of the Association of Avian Veterinarians.\"  \"Renal disease in the budgerigar.\" 122 (1984)"},{"key":"7","doi-asserted-by":"crossref","unstructured":"HL. Bowles,  \"Vet Clin N Am: Exotic Anim Pract.\"  5, \"Reproductive diseases of pet bird species.\" 489 (2002)","DOI":"10.1016\/S1094-9194(02)00008-7"},{"key":"8","doi-asserted-by":"crossref","unstructured":"SL Clubb  and JK Frenkel  \"J Parasitol.\"  78, \"Sarcocystis falcatula of opossums: transmission by cockroaches with fatal pulmonary disease in psittacine birds.\" 116 (1992)","DOI":"10.2307\/3283697"},{"key":"9","unstructured":"JM. Forshaw,  \"Australian parrots.\"  (1969)"},{"key":"10","doi-asserted-by":"crossref","unstructured":"Y Hannafusa, A Bradley, EE Tomaszewski, et al.  \"J Vet Diagn Invest.\"  19, \"Growth and metabolic characterization of Macrorhabdus ornithogaster.\" 256 (2007)","DOI":"10.1177\/104063870701900305"},{"key":"11","doi-asserted-by":"crossref","unstructured":"SEP Lahaye, M Eens, VM Darras, et al.  \"PloS One.\"  9, \"Bare-part color in female budgerigars changes from brown to structural blue following testosterone treatment but is not strongly masculinized.\" e86849 (2014)","DOI":"10.1371\/journal.pone.0086849"},{"key":"12","doi-asserted-by":"crossref","unstructured":"IM Langohr, MM Garner, M Kiupel,  \"Vet Pathol.\"  49, \"Somatotroph pituitary tumors in budgerigars (Melopsittacus undulatus).\" 503 (2012)","DOI":"10.1177\/0300985811419530"},{"key":"13","doi-asserted-by":"crossref","unstructured":"A. Meredith,  \"J Small Anim Pract.\"  51, \"Exotic animal medicine: a quick reference guide.\" 185 (2010)","DOI":"10.1111\/j.1748-5827.2010.00883.x"},{"key":"15","doi-asserted-by":"crossref","unstructured":"U Neumann  and N Kummerfeld  \"Avian Pathol.\"  12, \"Neoplasms in budgerigars (Melopsittacus undulatus): clinical, pathomorphological and serological findings with special consideration of kidney tumours.\" 353 (1983)","DOI":"10.1080\/03079458308436178"},{"key":"16","doi-asserted-by":"crossref","unstructured":"DN. Phalen,  \"Vet Clin N Am: Exotic Anim Pract.\"  17, \"Update on the diagnosis and management of Macrorhabdus ornithogaster (formerly mega-bacteria) in avian patients.\" 203 (2014)","DOI":"10.1016\/j.cvex.2014.01.005"},{"key":"18","doi-asserted-by":"crossref","unstructured":"AM Scagnelli  and TN Tully  \"Vet Clin N Am: Exotic Anim Pract.\"  20, \"Reproductive disorders in parrots.\" 485 (2017)","DOI":"10.1016\/j.cvex.2016.11.012"},{"key":"19","unstructured":"HG. Schlumberger,  \"Cancer Res.\"  14, \"Neoplasia in the parakeet. I. Spontaneous chromophobe pituitary tumors.\" 237 (1954)"},{"key":"20","doi-asserted-by":"crossref","unstructured":"RE. Schmidt,  \"Pathology of pet and aviary birds.\"  (2003)","DOI":"10.1002\/9780470376836"},{"key":"21","doi-asserted-by":"crossref","unstructured":"KF Schulz  and DA Grimes  \"Lancet.\"  359, \"Case-control studies: research in reverse.\" 431 (2002)","DOI":"10.1016\/S0140-6736(02)07605-5"},{"key":"22","doi-asserted-by":"crossref","unstructured":"SA Simova-Curd, JB Huder, J Boeni, et al.  \"Avian Pathol.\"  39, \"Investigations on the diagnosis and retroviral aetiology of renal neoplasia in budgerigars (Melopsittacus undulatus).\" 161 (2010)","DOI":"10.1080\/03079451003716375"},{"key":"23","doi-asserted-by":"crossref","unstructured":"SA Simova-Curd, D Nitzl, J Mayer, et al.  \"Clinical approach to renal neoplasia in budgerigars (Melopsittacus undulatus).\"  (2006)","DOI":"10.1111\/j.1748-5827.2006.00146.x"},{"key":"24","doi-asserted-by":"crossref","unstructured":"JH Smith, PJG Neill, ED Box,  \"J Parasitol.\"  75, \"Pathogenesis of Sarcocystis falcatula (Apicomplexa: Sarcocystidae) in the budgerigar (Melopsittacus undulatus). 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