At 13 weeks of gestation, the mean biparietal diameter was 2.52 and 0.25, the mean abdominal circumference was 6.90 and 1.65, and the mean femur length was 1.17 and 0.31. At 14 weeks of gestation, the mean biparietal diameter was 2.83 and 0.57, the mean abdominal circumference was 7.77 and 1.82, and the mean femur length was 1.38 and 0.48. At 15 weeks of gestation, the mean biparietal diameter was 3.23 and 0.51, and the mean abdominal circumference was 9.13 and 1.56, and the mean femur length was 1.74 and 0.58. At 16 weeks of gestation, the mean biparietal diameter was 3.62 and 0.58 and the mean abdominal circumference was 10.32 and 1.92 and the femur length was 2.10 and 0.51. At 17 weeks of gestation, the mean biparietal diameter was 3.97 and 0.44 and the mean abdominal circumference was 11.49 and 1.62 and the femur length was 2.52 and 0.51. At 18 weeks of gestation, the mean biparietal diameter was 4.25 and 0.53, the mean abdominal circumference was 12.41 and 1.89, and the mean femur length was 2.71 and 0.46. At 19 weeks of gestation, the mean biparietal diameter was 4.52 and 0.53, the mean abdominal circumference was 13.59 and 2.30, and the mean femur length was 3.03 and 0.50. The mean value of the biparietal diameter was 4.88’0.58, the mean value of the abdominal circumference was 14.80’l.89, and the mean value of the femur length was 3.35’O.47. 21 weeks of gestation: The mean value of the biparietal diameter was 5.22’0.42, the mean value of the abdominal circumference was 15.62’1.84, and the mean value of the femur length was 3.64’0.40. 22 weeks of gestation: The mean value of the biparietal diameter was 5.45’0.57, and the mean value of the abdominal circumference was 16.70’O.47. At 23 weeks of gestation: the mean biparietal diameter was 5.80’0.44, the mean abdominal circumference was 17.90’1.85, and the mean femur length was 4.21’0.41. At 24 weeks of gestation: the mean biparietal diameter was 6.05’0.50, the mean abdominal circumference was 18.74’2.23, and the mean femur length was 4.36’0.51. At 25 weeks of gestation: the mean biparietal diameter was 6.39’0.70′, the mean abdominal circumference was 19.64’2.20′ and the femur length was 4.65’0.42. At 26 weeks of gestation: the mean biparietal diameter was 6.68’0.61′, the mean abdominal circumference was 21.62’2.30′ and the femur length was 4.87’O.41. At 27 weeks of gestation: the mean biparietal diameter was 6.98’0.50′, the mean abdominal circumference was 18.74’2.23′ and the femur length was 4.36’0.51. At 28 weeks of gestation: the mean biparietal diameter was 7.24 O.65, the mean abdominal circumference was 22.86 O.41, and the mean femur length was 5.35 O.55. At 29 weeks of gestation: the mean biparietal diameter was 7.50 O.65 and the mean abdominal circumference was 23.71 O.1. At 30 weeks of gestation, the mean biparietal diameter was 7.83’0.62, the mean abdominal circumference was 24.88’2.03, and the mean femur length was 5.77’0.47. At 31 weeks of gestation, the mean biparietal diameter was 8.06’0.60, the mean abdominal circumference was 25.78’0.2.32. At 32 weeks of gestation, the mean biparietal diameter was 8.17 and 0.65, the mean abdominal circumference was 26.20 and 2.33, and the mean femur length was 6.43 and 0.49. At 33 weeks of gestation, the mean biparietal diameter was 8.50 and 0.47, the mean abdominal circumference was 27.78 and 2.30, and the mean femur length was 6.52 and 0.50. At 34 weeks of gestation: the mean value of biparietal diameter was 8.61s0.63’the mean value of abdominal circumference was 27.99s2.55’the mean value of femur length was 6.62s0.43. At 35 weeks of gestation: the mean value of biparietal diameter was 8.70s0.55’the mean value of abdominal circumference was 28.74s2.88’the mean value of femur length was 6.71s0.45. At 36 weeks of gestation: the mean value of biparietal diameter was 8.50s0.47’the mean value of abdominal circumference was 27.78s2.30’the mean value of femur length was 6.52s0.46. 0.45. 36 weeks of gestation: the mean value of biparietal diameter was 8.81s0.57’the mean value of abdominal circumference was 29.44s2.83’the mean value of femur length was 6.95s0.47. 37 weeks of gestation: the mean value of biparietal diameter was 9.00s0.63’the mean value of abdominal circumference was 30.14s2017’the mean value of femur length was 7.10s0.52. 38 weeks of gestation: the mean value of biparietal diameter was 9.00s0.63’the mean value of abdominal circumference was 30.14s2017’the mean value of femur length was 7.10s0.52: The mean value of the biparietal diameter was 9.08 s.0.59′ the mean value of the abdominal circumference was:30.63 s.2.83′ the mean value of the femur length was 7.20 s.0.43. 39 weeks of gestation: the mean value of the biparietal diameter was 9.21 s.0.59′ the mean value of the abdominal circumference was:31.34 s.3.12′ the mean value of the femur length was 7.34 s.0.53. 40 weeks of gestation: the mean value of the biparietal diameter was The mean value of abdominal circumference was 31.49-2.79′ and the mean value of femur length was 7.4-0.53.