PT - JOURNAL ARTICLE AU - Harold Fox TI - Aging of the placenta AID - 10.1136/fn.77.3.F171 DP - 1997 Nov 01 TA - Archives of Disease in Childhood - Fetal and Neonatal Edition PG - F171--F175 VI - 77 IP - 3 4099 - http://fn.bmj.com/content/77/3/F171.short 4100 - http://fn.bmj.com/content/77/3/F171.full SO - Arch Dis Child Fetal Neonatal Ed1997 Nov 01; 77