The best period of gestation to carry out chorion villous biopsy for prenatal diagnosis is?
A. 8-10 weeks
B. 10-12 weeks
C. 12-14 weeks
D. 14-16 weeks
Correct answer : B. 10-12 weeks
In which one of the following head and neck cancer, perineural invasion is most commonly seen? A. Adenocarcinoma B. Adenoid...