1. Maternal-Fetal Calcium and Bone Metabolism During Pregnancy, Puerperium, and Lactation -- Kovacs ...
During lactation, the combined effects of PTHrP (secreted by the breast) and estrogen deficiency increase skeletal resorption and raise the blood calcium, b...
http://edrv.endojournals.org/cgi/content/full/18/6/832

2. Genomics|HuGENet|Reviews Archive|Non-HuGE|Complications of Pregnancy, Childbirth, and the Puerper...
Complications of Pregnancy, Childbirth, and the Puerperium. Association of C677T polymorphism in the methylenetetrahydrofolate reductase gene with hypertens...
http://www.cdc.gov/genomics/hugenet/reviews/nonhuge/pregnancy.htm

3. NEJM -- Prothrombin and Factor V Mutations in Women with a History of Thrombosis during Pregnancy...
Prothrombin and Factor V Mutations in Women with a History of Thrombosis during Pregnancy and the Puerperium. (2000) Prothrombin and Factor V Mutations in W...
http://content.nejm.org/cgi/content/abstract/342/6/374