P. L. Martin

When you hear hoof beats...do not forget the zebras.

R. Fuleihan, F. Lobo, T. Pham, 2000, Current opinion in pediatrics.

Maternal selenium levels and sudden infant death syndrome (SIDS).

R. V. von Witt, N. Mcglashan, W. Melrose, 1996, Australian and New Zealand journal of medicine.