Lactation and post-partum amenorrhoea: a study based on data from three Norwegian cities 1860-1964.
Liestøl
K
K
Rosenberg
M
M
Walløe
L
L
D000568:Amenorrhea / Q000266:history*; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007774:Lactation; D009664:Norway; D049590:Postpartum Period; D011247:Pregnancy