PEDIATRICS Vol. 94 No. 4 October 1994, pp. A36
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MAKING NECESSITY OUT OF A VIRTUE

Student

Maybe the fact that no one has gone to the trouble of [doing controlled trials of intravascular ultrasound] reflects our past experience that it is not necessary to go to all that trouble. Maybe now we are living in a new era where if we feel strongly enough about something like this we have to do it.