The physiologic importance of the endometrium in assisted reproductive technology is now receiving much research attention. The historical importance of ultrasound for determination of endometrial pattern, thickness and contractility is reviewed and speculation provided for a possible mechanism of the adverse effect of thin endometrium on implantation.

We discuss the relations between welfare enhancing price discrimination and privacy enhancing technologies, and the possible drivers of consumers’ and merchants’ acceptance of those technologies.

Five years ago, “Privacy-enhancing technologies for the Internet” [23] examined the state of the then newly emerging privacy-enhancing technologies. In this survey paper, we look back at the last five years to see what has changed, what has stagnated, what has succeeded, what has failed, and why. We also look at current trends with a view towards the future.

In vitro fertilization, popularly referred to as IVF, has captured the attention of the public since its sensational introduction in 1978. Today assisted reproductive technology is available throughout most of the civilized world, and the practice is largely different from that used during the early days. Refinements in laboratory technology and clinical practice have allowed IVF to evolve into...

In the accompanying Letter we show an experiment where the wavefront of incident light is shaped to excite open eigenchannels, and we demonstrate an increased total transmission through an opaque, strongly scattering sample. Our wavefront shaping algorithm maximizes the intensity in a target point behind the sample. Ideally, the algorithm constructs the wavefront for which the intensity transmi...

Privacy-enhancing technologies (PETs), which constitute a wide array of technical means for protecting users’ privacy, have gained considerable momentum in both academia and industry. However, existing surveys of PETs fail to delineate what sorts of privacy the described technologies enhance, which in turn makes it difficult to differentiate between the various PETs. Moreover, those surveys cou...

BACKGROUND The trend to older maternal age at first birth is well established in Western countries and biological risk factors, particularly declining fertility, are well documented. Less is known, however, about the psychosocial well-being of older first time parents. This study explores differences in psychosocial adjustment during pregnancy in older (maternal age >or= 38 years) and younger (...

In this paper we identify and evaluate arguments for and against offering assisted reproductive technologies (ART), specifically IVF, to HIV discordant couples (male partner HIV positive, female partner HIV negative). The idea of offering ART to HIV discordant couples generates concerns about safety and public health and raises questions such as: what is an acceptable level of risk to offspring...