M-HEART,
MACH-1,
MADIT,
MADIT 2,
MAGIC,MAPHY,
MARS,
MDC,
MDC,
MDPIT,
MEHP,
MERCATOR,
MERIT-HF,
MEXIX,
MIAMI,
MIDAS,
MILESTONE,
MILIS,
MIRACL(E),
MITI I-II,
MONICA,
MOST,
MRC,
MRFIT,
MUSTT,
MVP,