THE ROLE OF ENDOTHELIN-1 AS A NEW INDICATOR OF PRE-ECLAMPTIC TOXAEMIA MATERNAL AND FETAL INSULIN-LIKE GROWTH FACTOR-1 (IGF-1) AND C-PEPTIDE: RELATION TO BIRTH WEIGHT EndovaginalVersusTransabdominal Ultrasonic Assessment of Bleeding During Early Pregnancy PERIPHERAL AND ENDOMETRIAL LEVELS OF STEROID HORMONES AND TRACE ELEMENTS IN MEDICATED AND NON-MEDICATED INTRAUTRiNE DEVICE USERS