Although the rate of deformities in test tube babies is now little different from that in naturally conceived children, Wang Tso- jen says that the number of test tube babies is so much smaller that one cannot make a valid comparison.
雖然，目前試管嬰兒畸形比例與自然受孕相差無幾，但王作仁指出，試管嬰兒人數與自然生產人數相去太遠，不能相提並論。