Several reports suggest increasing age in oocyte donors decreases the chances of in-vitro fertilization (IVF) success, while others describe no effect. The published data concerning gravidity and parity are similarly conflicting. To further address these questions, we retrospectively studied 445 consecutive donor IVF cycles at two large university-based IVF practices. Donor cycles were analysed...

background : to prepare safe and adequate blood supply to meet patients’ needs and ensure a sufficient number of regular blood donors, knowledge about factors encouraging people to donate blood regularly is essential. considering its importance, we aimed to identifying the effective factors of the return to blood donation in based on zero-inflated count regression models using bayesian approach...

Background: Blood transfusion is one of the most crucial needs of the society in multiple diseases and injuries. The only source of blood is donation. Students consist a large and healthy group who are able of providing a large number of blood donation, however, blood donation is rare amongst them. This study was conducted to evaluate students awareness and attitude towards blood donation in Ke...

The article presents a new system for the recruitment of gamete donors. The system is a partial application of the mirror exchange system: the male partner of a couple donates sperm, and in return, he receives the guarantee that his partner benefits from a greatly reduced waiting time for donor oocytes. More specifically, the woman will obtain donor oocytes within a period of 8 months. The proc...

The motives underlying prosocial behavior, like charitable donations, can be related either to actions or to outcomes. To address the neural basis of outcome orientation in charitable giving, we asked 33 subjects to make choices affecting their own payoffs and payoffs to a charity organization, while being scanned by functional magnetic resonance imaging (fMRI). We experimentally induced a rewa...

As an effective way to share corporate social responsibility, corporate donation comes forth rapidly and has become a tendency. Based on the relative study, we construct the theoretical model and analyze the relationship between corporate donation and corporate competitive advantage. The results are listed that five donation characteristics, that is, donation aims, donation methods, donation su...

organ donation is an integral part of the health care system. many patients who have had an accident or have undergone a progressive disease are in need of an organ transplant and if they do not receive the required organ they would die. it is important to know that the most important source of organ donation is the brain death patients. it is highly essential to determine the pivotal factors t...