1. 1. TheOffice ofDiseasePrevention andHealthPromotion, Eds. 1988 . Disease Prevention/Health Promotion . 2-29 : 129 -146 . Bull Publishing. Palo Alto, CA.
2. 2. R. Pear, 1991 . Larger number of new mothers are unmarried . The New York Times, Dec. 4: A20 .
3. 3. R. Pear, 1992 . U.S. reports rise in low-weight births . The New York Times, April 22: A18 .
4. Job Stress and Adverse Outcome of Pregnancy: A Causal Link or Recall Bias?