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Legro RS, Arslanian SA, Ehrmann DA, Hoeger KM, Murad MH, et al. (2013) Diagnosis and treatment of polycystic ovary syndrome: an Endocrine Society clinical practice guideline. <i>J Clin Endocrinol Metab<\/i> 98:4565-4592.","DOI":"10.1210\/jc.2013-2350"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Azziz R, Marin C, Hoq L, Badamgarav E, Song P (2005) Health care-related economic burden of the polycystic ovary syndrome during the reproductive life span. <i>J Clin Endocrinol Metab<\/i> 90:4650-4658.","DOI":"10.1210\/jc.2005-0628"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Pasquali R, Gambineri A, Pagotto U (2006) The impact of obesity on reproduction in women with polycystic ovary syndrome. <i>BJOG<\/i> 113:1148-1159.","DOI":"10.1111\/j.1471-0528.2006.00990.x"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. 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Delporte C (2013) Structure and physiological actions of ghrelin. <i>Scientifica (Cairo)<\/i>:518909.","DOI":"10.1155\/2013\/518909"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8. Murata M, Okimura Y, Iida K, Matsumoto M, Sowa H, et al. (2002) Ghrelin modulates the downstream molecules of insulin signaling in hepatoma cells. <i>J Biol Chem<\/i> 277:5667-5674.","DOI":"10.1074\/jbc.M103898200"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9. Andrews ZB, Liu ZW, Walllingford N, Erion DM, Borok E, et al. (2008) UCP2 mediates ghrelin&rsquo;s action on NPY\/AgRP neurons by lowering free radicals. <i>Nature<\/i> 454:846-851.","DOI":"10.1038\/nature07181"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10. Tong J, Prigeon RL, Davis HW, Bidlingmaier M, Kahn SE, et al. 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Bideci A, Camurdan MO, Yesilkaya E, Demirel F, Cinaz P (2008) Serum ghrelin, leptin and resistin levels in adolescent girls with polycystic ovary syndrome. <i>J Obstet Gynaecol Res<\/i> 34:578-584.","DOI":"10.1111\/j.1447-0756.2008.00819.x"},{"key":"26","doi-asserted-by":"crossref","unstructured":"26. Cassar S, Teede HJ, Harrison CL, Joham AE, Moran LJ, et al. (2015) Biomarkers and insulin sensitivity in women with Polycystic Ovary Syndrome: Characteristics and predictive capacity. <i>Clin Endocrinol (Oxf) <\/i>83:50-58.","DOI":"10.1111\/cen.12619"},{"key":"27","doi-asserted-by":"crossref","unstructured":"27. Daghestani MH, El-Mazny A (2011) Circulating ghrelin levels and the polycystic ovary syndrome: correlation with the clinical, hormonal and metabolic features. <i>Eur J Obstet Gynecol Reprod Biol<\/i> 155:65-68.","DOI":"10.1016\/j.ejogrb.2010.11.019"},{"key":"28","doi-asserted-by":"crossref","unstructured":"28. Japur CC, Diez-Garcia RW, de Oliveira Penaforte FR, de Sa MF (2014) Imbalance Between Postprandial Ghrelin and Insulin Responses to an Ad Libitum Meal in Obese Women With Polycystic Ovary Syndrome. <i>Reprod Sci<\/i> 21:1020-1026.","DOI":"10.1177\/1933719114522521"},{"key":"29","doi-asserted-by":"crossref","unstructured":"29. Kale-Gurbuz T, Akhan SE, Bastu E, Telci A, Iyibozkurt AC, et al. (2013) Adiponectin, leptin and ghrelin levels in obese adolescent girls with polycystic ovary syndrome. <i>J Pediatr Adolesc Gynecol<\/i> 26:27-30.","DOI":"10.1016\/j.jpag.2012.09.002"},{"key":"30","unstructured":"30. Kun Shi K, Jasim BH, Shao X (2011) Evaluation of Ghrelin Levels in Polycystic Ovary Syndrome and the Correlation with Obesity, Insulin Resistance and Other Biochemical Features. <i>Asian J Med Sci<\/i> 3:218-222."},{"key":"31","unstructured":"31. Mahde A, Shaker M, Al-Mashhadani Z (2009) Study of Omentin1 and Other Adipokines and Hormones in PCOS Patients. <i>Oman Med J<\/i> 24:108-118."},{"key":"32","doi-asserted-by":"crossref","unstructured":"32. Micic D, Sumarac-Dumanovic M, Kendereski A, Cvijovic G, Zoric S, et al. (2007) Total ghrelin levels during acute insulin infusion in patients with polycystic ovary syndrome. <i>J Endocrinol Invest<\/i> 30:820-827.","DOI":"10.1007\/BF03349222"},{"key":"33","doi-asserted-by":"crossref","unstructured":"33. Mitkov M, Pehlivanov B, Orbetzova M (2008) Serum ghrelin level in women with polycystic ovary syndrome and its relationship with endocrine and metabolic parameters. <i>Gynecol Endocrinol<\/i> 24:625-630.","DOI":"10.1080\/09513590802302233"},{"key":"34","doi-asserted-by":"crossref","unstructured":"34. Moran LJ, Noakes M, Clifton PM, Wittert GA, Le Roux CW, et al. (2007) Postprandial ghrelin, cholecystokinin, peptide YY, and appetite before and after weight loss in overweight women with and without polycystic ovary syndrome. <i>Am J Clin Nutr<\/i> 86:1603-1610.","DOI":"10.1093\/ajcn\/86.6.1603"},{"key":"35","doi-asserted-by":"crossref","unstructured":"35. Ozgen IT, Aydin M, Guven A, Aliyazicioglu Y. (2010) Characteristics of polycystic ovarian syndrome and relationship with ghrelin in adolescents. <i>J Pediatr Adolesc Gynecol<\/i> 23:285-289.","DOI":"10.1016\/j.jpag.2010.02.011"},{"key":"36","doi-asserted-by":"crossref","unstructured":"36. Panidis D, Asteriadis C, Georgopoulos NA, Katsikis I, Zournatzi V, et al. (2010) Decreased active, total and altered active to total ghrelin ratio in normal weight women with the more severe form of polycystic ovary syndrome. <i>Eur J Obstet Gynecol Reprod Biol<\/i> 149:170-174.","DOI":"10.1016\/j.ejogrb.2009.12.019"},{"key":"37","doi-asserted-by":"crossref","unstructured":"37. Panidis D, Farmakiotis D, Koliakos G, Rousso D, Kourtis A, et al. (2005) Comparative study of plasma ghrelin levels in women with polycystic ovary syndrome, in hyperandrogenic women and in normal controls. <i>Hum Reprod<\/i> 20:2127-2132.","DOI":"10.1093\/humrep\/dei055"},{"key":"38","unstructured":"38. Houjeghani S, Pourghassem Gargari B, Farzadi L (2012) Serum leptin and ghrelin levels in women with polycystic ovary syndrome:correlation with anthropometric, metabolic, and endocrine parameters. <i>Int J Fertil Steril<\/i> 6:117-126."},{"key":"39","doi-asserted-by":"crossref","unstructured":"39. Temel I, &Ccedil;elik &Ouml;, Hascalik S, &Ccedil;elik N, Sahin I, et al. (2010) Serum nonesterified fatty acids, ghrelin, and homocysteine levels in women with polycystic ovary syndrome. <i>Turk J Med Sci<\/i> 40:221-228.","DOI":"10.3906\/sag-0904-56"},{"key":"40","doi-asserted-by":"crossref","unstructured":"40. Wasko R, Komarowska H, Warenik-Szymankiewicz A, Sowinski J (2004) Elevated ghrelin plasma levels in patients with polycystic ovary syndrome. <i>Horm Metab Res<\/i> 36:170-173.","DOI":"10.1055\/s-2004-814341"},{"key":"41","unstructured":"41. Zwirska-Korczala K, Sodowski K, Konturek SJ, Kuka D, Kukla M, et al. (2008) Postprandial response of ghrelin and PYY and indices of low-grade chronic inflammation in lean young women with polycystic ovary syndrome. <i>J Physiol Pharmacol<\/i> 59 Suppl 2:161-178."},{"key":"42","doi-asserted-by":"crossref","unstructured":"42. Rotterdam ESHRE\/ASRM-Sponsored PCOS Consensus Workshop Group (2004) Revised 2003 consensus on diagnostic criteria and long-term health risks related to polycystic ovary syndrome. <i>Fertil Steril<\/i> 81:19-25.","DOI":"10.1016\/j.fertnstert.2003.10.004"},{"key":"43","doi-asserted-by":"crossref","unstructured":"43. Van der Lely AJ, Tschop M, Heiman ML, Ghigo E (2004) Biological, physiological, pathophysiological, and pharmacological aspects of ghrelin. <i>Endocr Rev<\/i> 25:426-457.","DOI":"10.1210\/er.2002-0029"},{"key":"44","doi-asserted-by":"crossref","unstructured":"44. Komarowska H, Wasko R, Iwanik K, Majewski P, Rafinska L, et al. 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