You too might be a womb twin survivor - how to find out

 The research questionnaire  is still available, even though Althea no longer collects the data for research purposes.

Try it here

It can be an interesting experience - reading through all the statements. The result will not prove you are or you are not a womb twin survivor - it has taken 1000  responses with  proof of the missing twin to come up with a shorter and more definitive list.

The definitive description of the womb twin survivor took eight years to formulate, but it is now available in this publication:

See here