My daughter is 14 months and will be needing her MMR shots soon. Should I get the shots split or do it all at once? Because I live in China, it is pretty difficult going back and forth with the baby. How far apart are the shots if I do split and does it make it less effective? Most of my friends had their kids shot all at once and most were fine. But because of all the controveresy, I'm still quite nervous. Any suggestions/comments would be appreciated!