Nine daily newspapers in the New York City area recently carried an advertisement under the headline “To All Who Received Blood From January 1991 to December 1996 in a New York / New Jersey Hospital. ”
इन चिट्ठियों में सिर्फ इतना नहीं होता कि उसमें दिये गये निर्देशों पर चलनेवालों को फायदे होंगे ।