Interpregnancy intervals in the United States: Data from the birth certificate and the National Survey of Family Growth (National Vital Statistics Reports, Vol. 64 No. 3). Hyattsville, MD: Centers for Disease Control and Prevention, National Center for Health Statistics. Google Scholar Cox, D....
Interpregnancy intervals in the United States: Data from the birth certificate and the National Survey of Family Growth (National Vital Statistics Reports, Vol. 64 No. 3). Hyattsville, MD: Centers for Disease Control and Prevention, National Center for Health Statistics. Cox, ...