Fetus-in-fetu in the scrotal sac of a newborn infant: imaging, surgical and pathological findings - Shin, J. H.; Yoon, C. H.; Cho, K.-S.; Lim, S. D.; Kim, E. A.-R.; Kim, K. S.; Pi, S. Y.; Kim, K. S.; Auh, Y. H. (Springer, 1999)
http://dx.doi.org/10.1007/s003300050773
Keywords: WW-YZ