1. 
   Multiple Birth
   Delivery of more than one baby (twins, triplets etc.)
   Found op http://www.encyclo.co.uk/local/20415
   
   
2. 
   multiple birth
   A multiple birth occurs when more than one baby is delivered at the same time.
   Found op http://www.babycentre.co.uk/glossary/m/
   
   
3. 
   multiple birth
   the delivery of more than one offspring in a single birth event. In most mammals the litter size is fairly constant and is roughly correlated with, ...
   Found op http://www.britannica.com/eb/a-z/m/137
   
   
4. 
   Multiple birth
   A multiple birth occurs when more than one fetus is carried to term in a single pregnancy. Different names for multiple births are used, depending on the number of offspring. Common multiples are two and three, known as twins and triplets. These and other multiple births occur to varying degrees in...
   Found op http://en.wikipedia.org/wiki/Multiple_birth
   
   
5. 
   Multiple Birth
   The birth of two or more babies that are produced during the same gestational period by the same mother. Multiple births include twins, triplets, quadruplets and so forth.
   Found op http://www.pregnology.com/AZ/M/7
   
   
6. 
   multiple birth
   multiple birth, bringing forth of more than one offspring at birth. Although many smaller mammals bear several young at a time, multiple births are relatively uncommon in humans and other primates. Twinning, the process that leads to the production of more than one offspring, results in twins, and w...
   Found op http://www.infoplease.com/ce6/sci/A0834407.html
   
   
7. 
   multiple birth
   In humans, the production of more than two babies from one pregnancy. Multiple births can be caused by more than two eggs being produced and fertilized (often as the result of hormone therapy to assist pregnancy), or by a single fertilized egg dividing more than once before implantation. See also tw...
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0006887.html
   
   
8. 
   Multiple Birth
   Birth of more than one baby from a pregnancy.
   Found op http://www.thebridgecentre.co.uk/04_causesofinfertility/glossary_of_terms.h
   
   

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