fix(simple_participant) fix next_visit_date and next_visittype
fix(simple_participant) fix next_visit_date and next_visittype

tperrier/mwachx,I-TECH-UW/mwachx,I-TECH-UW/mwachx,I-TECH-UW/mwachx,I-TECH-UW/mwachx,tperrier/mwachx,tperrier/mwachx,tperrier/mwachx