Minor refactor.
Minor refactor.

YuanZhu-apple/ResearchKit,oliverschaefer/ResearchKit,cornelltech/ResearchKit,mluedke2/ResearchKit,boland25/ResearchKit,mluedke2/ResearchKit,KaiCode2/ResearchKit,md0u80c9/ResearchKit,jeremiahyan/ResearchKit,boland25/ResearchKit,cornelltech/ResearchKit,allen7wang/ResearchKit,mluedke2/ResearchKit,oliverschaefer/ResearchKit,jeremiahyan/ResearchKit,shazino/ResearchKit,oliverschaefer/ResearchKit,boland25/ResearchKit,chb/ResearchKit,KaiCode2/ResearchKit,chb/ResearchKit,weijentu/ResearchKit,YuanZhu-apple/ResearchKit,YuanZhu-apple/ResearchKit,shazino/ResearchKit,weijentu/ResearchKit,weijentu/ResearchKit,boland25/ResearchKit,allen7wang/ResearchKit,oliverschaefer/ResearchKit,weijentu/ResearchKit,md0u80c9/ResearchKit,YuanZhu-apple/ResearchKit,chb/ResearchKit,KaiCode2/ResearchKit,allen7wang/ResearchKit,cornelltech/ResearchKit,md0u80c9/ResearchKit,jeremiahyan/ResearchKit,chb/ResearchKit,shazino/ResearchKit,md0u80c9/ResearchKit