This Committee Opinion concludes that donors be advised of the number of cycles/donations that a given oocyte donor may undergo. Although existing data cannot permit conclusive recommendations, a concern for the issues of the safety and well-being of oocyte donors warrants consideration. This document replaces the document of the same name, previously published in 2008 (Fertil Steril 2008; 90:S...

Historically, gamete donation has been characterized by donor anonymity and concealment from the child of the nature of her or his conception. A number of studies undertaken in various countries have explored parents’ views regarding disclosure to their donor-conceived children of the means of their conception. To date, most of the study populations relating to oocyte donation have been recipie...

By harboring male and female functions in the same genome and expressing them in every individual, simultaneous hermaphrodites may incur sexual conflict unless both sex functions can evolve phenotypic optima independently of each other. The first step toward understanding their capacity to do so lies in understanding whether sex functions are phenotypically correlated within individuals, but re...

The advantage of sex has been among the most debated issues in biology. Surprisingly, the question of why sexual reproduction generally requires the combination of distinct gamete classes, such as small and large gametes, or gametes with different mating types, has been much less investigated. Why do systems with alternative gamete classes (i.e. systems with either anisogamy or mating types or ...

iron is a pro-oxidant cofactor that may be linked to atherosclerosis progression. free iron catalyzes the generation of free radicals and free radicals promote the oxidation of lipids. reduction of body iron stores secondary to blood donation has been hypothesized to reduce lipid peroxidation. the aim of this study was to evaluate the association between blood donation and antioxidant enzymes a...

blood supply chain management is one of the mainchallenges in healthcare system. optimal locationof blood donation camps is one of the key factors in optimizing the bloodsupply chain. disruption in location of blood donation camps because ofdisasters will have a negative impact on the entire supply chain. thispaper develops a generalized network optimization model for the complex supplychain of...

embryo donation was one of the infertility treatment methods introduced to the iranian legal system in 2003 (act of embryo donation) and its by-law passed in 2005 after numerous discussions. embryo donation is a new legal issue in iran. no similar act has been previously legislated in the legal system; however, on the other hand, the importance of the judicial procedure in its execution cannot ...

This study interviewed adolescents conceived using sperm donation to examine their experiences of contacting and meeting 'same-donor offspring' (i.e. donor-conceived offspring raised in different families who share the same donor), their motivations for this contact, and how they make meaning of these relationships. This in-depth qualitative study involved semi-structured interviews with 23 you...