Journal Article
                        
                        Yamashita, Tadashi, Sherri Ann  Suplido, Cecilia  Ladines-Llave, Yuko  Tanaka, Naomi  Senba, and Hiroya  Matsuo.  
"A cross-sectional analytic study of postpartum health care service utilization in the Philippines." PloS one 9, no. 1 (2014).