Anzenberger, G., Gossweiler, H. 1993. How to obtain individual urine samples from undisturbed marmoset families. American Journal of Primatology 31, 223-230.

An apparatus and a method are described, which allow simultaneous urine collection from all individual members of undisturbed marmoset families. By the end of the third week of training, it was not unusual to collect urine samples from an entire family.