Appendix 3.

Banked blood samples.

	University of California, Berkeley		Columbia University		Mount Sinai Medical Center		Cincinnati Children’s Hospital
Sample type	C	M	C	M	C	M	C	M
Whole blood	X	X	X	X	X	X	X	X
Serum	X	X			X	X	X	X
Clot	X	X
Plasma	X	X	X	X	X	X
Buffy coat	X	X	X	X		X
Red blood cells	X	X	X	X		X
Lymphocytes (cryopreserved)	X		X	X
Blood smears	X	X
Cholinesterase (stabilized)	X	X
DNA	X	X	X	X	X	X	X	X
Other specimens	X	X	X	X			X	X

Abbreviations: C, child/cord blood; M, mother.