COMPOSITION OF EARLY HUMAN MILK (E-MILQ) THE GAMBIA - THE ONGOING MILQ (MOTHERS, INFANTS AND LACTATION QUALITY) STUDY HAS SUCCESSFULLY COLLECTED COLOSTRUM (AT 2-3 DAYS POSTPARTUM) AND THEN BREAST MILK FROM 1 MONTH THROUGH 8.5 MONTHS POSTPARTUM FROM 1000 WOMEN IN 4 COUNTRIES. MILK SAMPLES WERE NOT COLLECTED DURING THE FIRST MONTH POSTPARTUM BECAUSE OF INVESTIGATOR'S CONCERN THAT PARTICIPANT BURDEN WOULD RESULT IN UNACCEPTABLE RATES OF REFUSAL TO ENROLL. HOWEVER, SAMPLE COLLECTION FROM 1 TO 8.5 MONTHS HAS PROCEEDED EXCEPTIONALLY WELL WITH FEWER DROP-OUTS THAN EXPECTED AT ALL FOUR SITES. THE INVESTIGATORS HAVE THEREFORE RECEIVED FUNDS TO CONDUCT THIS FOLLOW-ON, SEPARATE STUDY OF MILK COMPOSITION AND VOLUME BETWEEN BIRTH AND 1 MONTH POSTPARTUM. HAVING THIS INFORMATION ON MILK COMPOSITION AND VOLUME DURING THE FIRST MONTH WILL ENABLE US TO: * COMPLETE THE OTHERWISE CONTINUOUS COMPOSITION CURVES FROM 1 TO 8.5 MONTHS WITH DATA FROM BIRTH THROUGH 1 MONTH. * MEASURE THE AVERAGE 14-DAY MILK VOLUME FOR EACH PARTICIPANT ON A ROLLING BASIS BETWEEN 2 TO 3 DAYS POSTPARTUM AND 31 DAYS POSTPARTUM. * DETERMINE YOUNG INFANTS' NUTRIENT INTAKES FROM MILK. * DETECT STRONGER ASSOCIATIONS BETWEEN MATERNAL STATUS AND MILK CONCENTRATIONS. * OBTAIN REFERENCE VALUES FOR NUTRIENTS, AND DATA ON METABOLITES, HMOS AND BIOACTIVE PROTEINS IN EARLY MILK.