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The Journal of Obstetrics and Gynecology of India > 2019 > 69 > 3 > 197-202
Endocrinologia y nutricion (English Edition) > 2013 > 60 > 4 > 173-178
AORN Journal > 2013 > 97 > 2 > 195-209
Public Health > 2006 > 120 > 5 > 412-417