at the time of

adv.

在…的时候；

More on RotaShield and intussusception: the role of age at the time of vaccination
Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis
[A large amount of distilled water ineffective for prevention of bladder cancer cell implantation at the time of transurethral resec...
SJ Allen, photograph and biography not available at the time of publication.
DNA topoisomerase II is required at the time of mitosis in yeast
Prognostic value of bone marrow biopsy in operable breast cancer patients at the time of initial diagnosis: Results of a 20-year med...
Unintended Medication Discrepancies at the Time of Hospital Admission
Weight Gain at the Time of Menopause
Early and Sustained Survival Benefit Associated With Statin Therapy at the Time of Percutaneous Coronary Intervention
Ovarian conservation at the time of hysterectomy and long-term health outcomes in the nurses' health study.