Posthumous sperm retrieval (PSR) is a new and unconventional use of cryopreservation technology. Cryopreservation was used to preserve the human sperm for future use for the treatment of infertility in men by medical processes. In 1980, sperm obtained in the post-mortem state was first reported. Journal Article is sometimes called a Scientific Article, a Peer-Reviewed Article, or a Scholarly Research Article. Together, journal articles in a particular field are often referred to as The Literature. Journal articles are most often Primary Research Articles.