1. Lactation
2. 3. Riordan J: A Practical Guide to Breastfeeding. St. Louis, Missouri: C.V. Mosby Company, 1983, p.127-127
3. 5. Lauwers J, Woessner C: Counseling the Nursing Mother: A Reference Handbook for Health Care Providers and Lay Counselors, 2nd ed. Garden City Park, NY: Avery Publishing Group, Inc., 1989, p.395-395