In general, the criteria for the treatment of urolithiasis in children are the same as those for adults. Today, extracorporeal shock wave lithotripsy (ESWL) is the method of choice in the treatment of most pediatric urinary stones. Stone-free rates between 67% and 93% at short-term follow-up, and 57% to 92% at long-term follow-up, have proven the efficacy of ESWL treatment in children. Neverthe...

Fifteen years ago, DeLone and McLean published their original model of IS success, which received considerable attention in the literature. Given the widespread acceptance of the model, we conducted a meta-analysis to determine whether the model had been validated by research studies reported in the literature. By aggregating the results of 52 empirical studies that examined relationships withi...

OBJECTIVE Risk factors for implant therapy are represented by all general and local conditions that through various mechanisms can increase either short-term and long-term failure risk. The aim of this study is to assess the implant survival and implant success rates with single and multiple risk factors. PATIENTS AND METHODS To address the research purpose, a retrospective cohort study was d...

abstract:   introduction: colorectal cancer (crc) is one of the most common cancers in the world. during the past decades, survival of colorectal cancer patients has improved worldwide, however, it is not clear what factors have contributed to this development. this study was designed to evaluate the prognostic impact of a wide spectrum of pathologic parameters on survival rate in patients with...

Simulation modeling was used to reconstruct Black-browed Albatross (Diomedea melanophris) population trends. Close approximations to observed data were accomplished by annually varying survival rates, reproductive success, and probabilities of returning to breed given success in previous years. The temporal shift in annual values coincided with the start of longline fishing at South Georgia and...

The success of lung transplantation has improved over time as evidenced by better long-term survival and functional outcomes. Despite the success of this procedure, there are numerous problems and complications that may develop over the life of a lung transplant recipient. With proper monitoring and treatment, the frequency and severity of these problems can be decreased. However, significant i...

in this study esophageal resection and radiotherapy methods were compared in relation to the patients suffering from esophageal cancer. three hundred and fifty-four patients with squamous cell carcinoma of esophagus who had been hospitalized in the cancer institute of the imam khomeini hospital, tehran, during 1981-1985 were followed up through march 21st, 1987. based on the findings, patients ...