Assertion: common marmoset | /r/HasProperty | stevenson
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Source sentences:
text: A female would not be able to care for infants alone because of the high demands of pregnancy and lactation as well as the mechanical difficulties of carrying two heavy infants, therefore all age-sex classes contribute to infant survival and development among common marmosets (Stevenson & Rylands 1988; Rothe et al. 1993; Tardif et al. 1993; Kinzey 1997).