11.   Some fertility experts questioned whether the latest studies exaggerate the risk.

12.   The abortion was carried out a month ago, fertility expert Professor Sir Robert Winston told BBC television.

n. + expert >>共 577
industry 7.55%
health 4.64%
security 4.09%
bomb 3.66%
computer 2.71%
aviation 2.27%
safety 2.16%
explosive 1.97%
disposal 1.96%
weapon 1.38%
fertility 0.12%
fertility + n. >>共 99
clinic 20.98%
treatment 18.71%
drug 15.97%
rate 7.63%
specialist 4.65%
problem 3.46%
doctor 3.22%
industry 1.55%
expert 1.43%
procedure 1.31%
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