Cantero Maria Teresa Ruiz, Carrasco-Portiño Mercedes, Fiallos Eduardo Espinoza, Sánchez Cristina Durán, de Sierra Cristina
J Epidemiol Community Health. 2007 May;61(5):370-1.
Geographical, socioeconomic and cultural factors contribute to high maternal mortality rates in developing countries
地理、社会经济和文化因素导致发展中国家孕产妇死亡率居高不下