摘要
The popular and scientific debates about a possible decline in semen quality over ti^e past decades are largely based on retrospective analyses of semen analysis data performed in the past. This article will argue that the conclusions from such analyses are significantly weakened because the methods of laboratory andrology have changed considerably since the 1950s. In the last 20-30 years, there have been significant developments in training and competence,
The popular and scientific debates about a possible decline in semen quality over ti^e past decades are largely based on retrospective analyses of semen analysis data performed in the past. This article will argue that the conclusions from such analyses are significantly weakened because the methods of laboratory andrology have changed considerably since the 1950s. In the last 20-30 years, there have been significant developments in training and competence,
