Many had developmental problems or were in special needs programs; many others were in regular classes.
"While initially there was a great deal of hype," Peterson says, "I think now we've reached the point where we are finally solving many developmental and technical problems".
In addition to being a notoriously inefficient procedure, animal cloning has produced many animals with conspicuous developmental problems, like respiratory illnesses and overly large placentas.
In the study, published on Sunday in the journal Pediatrics, Dr. Sices noted that while pediatricians and family physicians had increased their screenings for developmental problems, many early warning signs were still missed.
With this knowledge, we will be in a better position to develop new preventive and therapeutic approaches for the management of many of the common developmental problems affecting the human dentition.
She argues that as many as one in five children may suffer from developmental problems; it is a public information issue in waiting.
The toxic metal, released over many years, can cause learning disabilities, lower IQs and other developmental problems, even at low levels.
Heather Stapleton, an assistant professor of environmental chemistry at Duke University, says many toxic chemicals are found in foam, which contains flame-retardant chemicals that are associated with neurological and developmental problems in children.
Many develop microcephaly, a condition associated with incomplete brain development that can leave babies with abnormally small heads and various developmental problems.
