Relationship between blood groups and ulcers: revisiting the pioneer work.

Relationship of blood types (ABO/Rh) with recurrent aphthous ulcers: A case-control study

Background: Recurrent aphthous stomatitis (RAS) is among the most common oral lesions and pain is often the chief complaint of patients. The main etiology of RAS is unknown but several predisposing factors have been suggested. This study aims to assess the correlation of blood types (ABO/Rh) with RAS. Methods: We conducted this prospective screening study on 50 patients with RAS and 50 controls...

Revisiting the Relationship Between Systems of Innovation and Health Systems: A Response to Recent Commentaries

Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics

Variations in the ejaculatory abstinence durations suggested by different guidance bodies have resulted in a growing concern among researchers over what the concise period of ejaculatory abstinence for an optimal semen sample ought to be. Several studies have been undertaken to examine the association between the length of sexual abstinence and semen characteristics. Not all studies, however, h...

The Relationship between Blood Lead Level and Neuro-psychological and Hematological Findings in Lead-Exposed Workers of Battery Industry

Background: Hematological effects and digestive and neuro-psychological signs and symptoms are some manifestations of lead toxicity. However, there are conflicting reports of their prevalence among lead exposed workers and their relationship with blood lead levels (BLL). This case- control study assessed the relationship between BLL and hematological indexes and digestive (abdominal colic, ir...

Revisiting Energy-GDP Nexus for the Selected Countries of the Middle East Region

This paper investigates the relationship between total energy consumption and GDP in six countries of the Middle East , including Iran,Pakistan,Saudi Arabia,Oman,Bahrain and the United Arab Emirates. The data are annual and spanning the period 1980-2012.We employed Hsiao’s (1981) methodology to examine causality relation between total energy consumption and GDP.The empirical findings show a uni...