@inproceedings{ SALAMANCA,

author = { ALBERTO SALAMANCA BALLESTEROS } ,

title = { TRANSVAGINAL ULTRASOUND VISUALIZATION OF EMBRYONIC DEVELOPMENT. IMPORTANCE OF YOLK SAC ASSESSMENT },

booktitle = { 6th MEETING OF EUROPEAN ASSOCIATION OF GYNAECOLOGISTS AND OBSTETRICIANS },

year = { 1991 },

pages = { None - None },

location = { MOSCOW },

}