"Any anomaly, functional or structural, that presents in infancy or later in life and is caused by events preceeding birth, whether inherited, or acquired." 
 

Any medication, chemical, infectious disease, or environmental agent that might interfer with the normal development of a fetus and result in the loss of a pregnancy, a birth defect or a pregnancy complication. 
 

"A communication process which deals with the human problems associated with the occurrence, or risk of occurrence, of a genetic disorder in a family."