Schmitt, Susan Elaine2024-01-082024-01-081972https://hdl.handle.net/1805/37747This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).en-USTwinsInfant, NewbornChromosome AbnormalitiesThesis