1. Hamza, R.T., Z.A. Elkabbany, A.M. Shedid, A.I. Hamed and A.O. Ebrahim, 2016. Serum chemerinin obese children and adolescents before and after L-carnitine therapy: Relation to non-alcholic fatty liver disease and other features of metabolic syndrome. Arch. Med. Res., 47: 541-549.
2. Hamza, R.T., M.H. Shalaby, L.S. Hamed, D. Abdulla, S.M. Elfekky and O.M. Sultan, 2016. Renal anomalies in patients with turner syndrome: Is scintigraphy superior to ultrasound? Am. J. Med. Genet. Part A, 170: 355-362.
   CrossRef  |  Direct Link  |  
3. Hamza, R.T., A.Y. Ahmed, D.G. Rezk and A.I. Hamed, 2016. Dietary fructose intake in obese children and adolescents: Relation to procollagen type III N-terminal peptide (P3NP) and non-alcoholic fatty liver disease. J. Pediatric Endocrinol. Metab., 29: 1345-1352.
   CrossRef  |  
4. Hamza, R.T., A.A. Elfaramawy and N.H. Mahmoud, 2016. Serum pentraxin 3 fragment as a non invasive marker of non-alcoholic fatty liver disease in obese children and adolescents. Horm. Res. Pediatr, 86: 11-20.
5. El Kholy, M., H. Elsedfy, M. Fernandez-Cancio, R.T. Hamza and N.H. Amr, 2016. Nutritional rickets: Vitamin D, calcium and the genetic make-up. Pediatric Res., 81: 356-363.
   CrossRef  |  Direct Link  |  
6. Hamza, R.T., T.H. Abdelaziz and M. Elakkad, 2015. Anthropometric and nutritional parameters in Egyptian children and adolescents with osteogenesis imperfecta. Hormone Res. Paediatrics, 83: 311-320.
   CrossRef  |  Direct Link  |  
7. Shaker, N.M., H.H. Elshahawi, M. Rabie and R.T. Hamza, 2014. Personality profile of obese children and adolescents: Relation to body mass index and metabolic complications. Middle East Curr. Psychiatry, 21: 193-201.
   CrossRef  |  Direct Link  |  
8. El-Baz, F., R.T. Hamza, M.S. Ayad and N.H. Mahmoud, 2014. Hyperandrogenemia in male autistic children and adolescents: Relation to disease severity. Int. J. Adolescent Med. Health, 26: 79-84.
   CrossRef  |  
9. Carre, A., R.T. Hamza, D. Kariyawasam, L. Guillot and R. Teissier et al., 2014. First FOXE 1 mutation in bamforth syndrome causing thyroid- gene overactivation. Thyroid, 24: 649-654.
10. Amr, N.H., H. Elsedfy, R.T. Hamza, I. Ghoneim, N. Ghallab and M. El Kholy, 2014. Constitutional delay of growth and puberty: The patient’s perspective. J. Endocrinol. Diabetes Mellitus, 2: 26-32.
    Direct Link  |  
11. Abdel-Aziz, E.A., R.T. Hamza, A.M. Youssef and F.M. Mohammed, 2014. Health related quality of life and psychological problems in Egyptian children with simple obesity in relation to body mass index. Egypt. J. Med. Hum. Genet., 15: 149-154.
    CrossRef  |  Direct Link  |  
12. Hewedi, D.H., R.T. Hamza, H. Sadek, H. Hussein, N. Zaki and M.T. Sallam, 2013. Effect of growth hormone insulin-like growth factor 1 axis on bone turnover in Egyptian adolescent girls with anorexia nervosa. Middle East Curr. Psychiatry, 20: 42-48.
    CrossRef  |  Direct Link  |  
13. Hamza, R.T., N.A. Raof and K.O. Abdallah, 2013. Prevalence of multiple forms of autoimmunity in Egyptian patients with Turner syndrome: Relation to karyotype. J. Pediatric Endocrinol. Metab., 26: 545-550.
    CrossRef  |  
14. Hamza, R.T., K.S. Awwad, K.A. Temsah and A.I. Hamed, 2013. R620W polymorphism of protein tyrosine phosphatase PTPN22 in Egyptian children and adolescents with systemic lupus erythematosus: Relation to thyroid autoimmunity. Int. J. Adolescent Med. Health, 25: 143-149.
    CrossRef  |  
15. Hamza, R.T., D.H. Hewedi and M.T. Sallam, 2013. Iodine deficiency in Egyptian autistic children and their mothers: Relation to disease severity. Arch. Med. Res., 44: 555-561.
    CrossRef  |  Direct Link  |  
16. Hamza, R.T., A.I. Hamed and R.R. Kharshoum, 2013. Iron homeostasis and serum hepcidin-25 levels in obese children and adolescents: Relation to body mass index. Hormone Res. Paediatrics, 80: 11-17.
    CrossRef  |  Direct Link  |  
17. Elfaramawy, A., R.T. Hamza, N.H. Mahmoud and R.H. Elkabarity, 2013. Cytokeratin-18 as a marker of non- alcoholic fatty liver disease in obese children and adolescents. Life Sci. J., 10: 1-7.
18. El-Kabbany, Z.A., R.T. Hamza, S.A. Ibrahim and N.H. Mahmoud, 2013. Dyslipidemia and hyperinsulinemia in children and adolescents with chronic liver disease: Relation to disease severity. Int. J. Adolescent Med. Health, 26: 195-201.
19. El Kholy, M., R.T. Hamza, M. Saleh and H. Elsedfy, 2013. Penile length and genital anomalies in Egyptian male newborns: Epidemiology and influence of endocrine disruptors. J. Pediatric Endocrinol. Metab., 26: 509-513.
    CrossRef  |  
20. Shahein, A.R.H., R.T. Hamza and H. Elsedfy, 2012. Extensive mongolian spots with facial involvement associated with immune thrombocytopenia and Spina Bifida in a 3-month-old Infant: Case report. Univ. Toronto Med. J., 90: 12-14.
21. Nowier, A., M. Esmat and R.T. Hamza, 2012. Surgical and functional outcomes of sigmoid vaginoplasty among patients with variants of disorders of sex development. Int. Braz. J. Urol., 38: 380-388.
    CrossRef  |  
22. Hamza, R.T., A.I. Hamed and M.T. Sallam, 2012. Effect of zinc supplementation on growth Hormone Insulin growth factor axis in short Egyptian children with zinc deficiency. Italian J. Pediatrics, Vol. 38. 10.1186/1824-7288-38-21.
    CrossRef  |  
23. Elsedfy, H.H., R.T. Hamza, M.H. Farghaly and M.S. Ghazy, 2012. Uterine development in patients with Turner syndrome: Relation to hormone replacement therapy and karyotype. J. Pediatric Endocrinol. Metab., 25: 441-445.
    CrossRef  |  
24. El-Kabbany, Z.A., R.T. Hamza, A.S. Abd El Hakim and L.M. Tawfik, 2012. Thyroid and hepatic haemodynamic alterations among Egyptian children with liver cirrhosis. ISRN Gastroenterol., Vol. 2012. 10.5402/2012/595734.
    CrossRef  |  
25. Hamza, R.T., S.M. Abdel-Fattah, S. Abdel-Aziz and A.I. Hamed, 2011. Hyperinsulinemia and ovarian hyperandrogenemia among pre-pubertal and early pubertal obese girls: Relation to body mass index. Int. J. Child Adolescent Health, 4: 165-174.
    Direct Link  |  
26. Hamza, R.T., M.A. Ismail and A.I. Hamed, 2011. Growth hormone deficiency in children and adolescents with cerebral palsy: Relation to gross motor function and degree of spasticity. Pak. J. Biol. Sci., 14: 433-440.
27. Hamza, R.T., K.S. Awwad, M.K. Ali and A.I. Hamed, 2011. Reduced serum concentrations of 25-hydroxy vitamin D in Egyptian patients with systemic lupus erythematosus: Relation to disease activity. Med. Sci. Monitor: Int. Med. J. Exp. Clin. Res., 17: CR711-CR718.
    CrossRef  |  Direct Link  |  
28. Elsedfy, H.H., M. Elkholy, R. Tarif, A. Hamed and M. Elalfy, 2011. Adrenal function in thalassemia major adolescents. Pediatric Endocrinol. Rev., 8: 150-154.
29. Youssef, A.M., R.T. Hamza, W.A. Mouharram and E.A.S. Al Azhar, 2010. Study of changes in antidiuretic hormone level in children with primary monosymptomatic nocturnal eneuresis. J. Pediatrics, 1: 41-50.
30. Mouharram, W.A., R.T. Hamza, A.M. Youssef and M.M.O. Al Azhar, 2010. 25-Hydroxy vitamin D status in Egyptian obese children. J. Pediatrics, 13: 1-10.
31. Hamza, R.T., D.H. Hewedi and M.A. Ismail, 2010. Basal and adrenocorticotropic hormone stimulated plasma cortisol levels among Egyptian autistic children: Relation to disease severity. Italian J. Pediatrics, Vol. 36. 10.1186/1824-7288-36-71.
    CrossRef  |  
32. El-Sayed, Z.A., R.T. Hamza, N.D. Sayed and N.H. Mahmoud, 2010. Effect of inhaled corticosteroids on growth and puberty in Egyptian asthmatic children and adolescents. Pak. J. Biol. Sci., 13: 977-984.
    CrossRef  |  Direct Link  |  
33. Elsedfy, H.H., R.T. Mohamed, M.S. Emam and M. El Kholy, 2009. Male genital anomalies: Epidemiology and influence of endocrine disruptors. Hormone Res., 72: 231-231.
34. Elhawary, N., R. Hamza, M. El Sheikh, M. Rashad and R. Shawky, 2009. Lack of Association between HOXA1/HOXB1Gene variants and autism in Egyptian patients. Acta Pediatrica, 98: 126-126.
35. Mostafa, G.A., R.T. Hamza and H.H. El-Shahawi, 2008. Allergic manifestations in autistic children: Relation to disease severity. J. Pediatric Neurol., 6: 115-123.
    Direct Link  |  
36. Mostafa, G.A., D.F. El-Sherif, R.T. Hamza and A.A. Shehab, 2008. Hyperserotonemia in Egyptian autistic children: Relation to allergic manifestations. J. Pediatric Neurol., 6: 227-236.
    CrossRef  |  Direct Link  |  
37. Hamza, R.T., A.M. Youssef, W.A. Mouharam and A. El Danasoury, 2008. Maternal and neonatal iodine nutrition in Cairo. Int. J. Pediatr Neonatol., 8: 1-6.
38. Elsedfy, H., R.T. Hamza and S. Selim, 2008. Assessment of lipid profile, insulin sensitivity and bone mineral density after surgery for childhood craniopharyngioma. Egypt. J. Pediatrics, 25: 35-49.
39. El-Baz, F., R.T. Hamza, M.A. Shams Eldin and M.A. Hassan, 2008. Study of thyroid function in children with attention deficit hyperactivity disorder and aggressive behavior. Egypt. J. Med. Hum. Genet., 9: 93-103.
40. Shawky, R., R. Hamza, Z. El Kabbany, A. El Danasoury and M. ElKholy, 2007. Prevalence of iodine deficiency among school children in Cairo. Riv Italiana Med. Adolescenza, 5: 37-42.
41. Mostafa, G.A., H.K. Nazif, R.T. Hamza, H.H. El-Shahawi, H.M. El-Khawas and M.A. Hassan, 2007. Transcranial doppler abnormalities in pediatric patients with Neuropsychiatric Systemic Lupus Erythematosus (NPSLE). Egypt. J. Pediatrics, 24: 301-316.
42. Hamza, R.T., D.H. Hewedi and A.S. El-Danasory, 2007. Iron status in children with attention deficit hyperactivity disorder: Implications on treatment. Int. J. Child Neuropsychiatry, 4: 111-119.
43. El-Kabbany, Z.A., R.T. Hamza, M. Rashad and N.E. Abdelal, 2007. Study of intestinal iron absorption in children with chronic liver disease and those with Iron deficiency anemia. Ain Shams Med. J., 58: 857-866.
44. El Sheikh, M., R.T. Hamza, N. El-Hawary and R. Shawky, 2007. The implication of HOXA1 and HOXB2 gene variants in the occurance and severity of childhood autism in Egypt. Curr. Psychiatry, 14: 75-88.
45. Hamza, R.T., M. Haider, S. Teama and N.A. Elhawary, 2006. Association between polymorphisms within tumor necrosis factor genes and the development of bronchial asthma among Egyptian children. Egypt. J. Med. Hum. Genet., 7: 203-213.
    Direct Link  |  
46. Elsedfy, H., S.A. Fattah, R. Hamza, M. Ghazy and A. Hussein, 2006. Pelvic ultrasound measurements in normal girls in relation to serum oestradiol levels. Hormone Res., 65: 98-98.
47. Hamza, R.T., H. El Sedfy, S. Abdel-Fattah and A.I. Hussein, 2005. Study of the level of estradiol (E2) in prepubertal and early pubertal girls and its relation to uterine and ovarian morphology and sizes. Egypt. J. Pediatrics, 22: 483-494.
48. EI‐Kabbany, Z., M. Rashad, R. Tareef, N. Galal and S.M. Eisayed, 2003. Dorfman-Chanarin syndrome in Egypt. Am. J. Med. Genet. Part A, 121: 75-78.
    CrossRef  |  Direct Link  |