Investors looking for attractive dividends can always find something of interest in turnaround stories. There are, however, high-risk turnarounds and low-risk turnarounds. Medical Properties Trust (MPW 0.45%) is a high-risk story, while Prologis (PLD 0.57%) and Rexford Industrial (REXR -0.41%) are both of the low-risk variety. That's why Medical Properties Trust is probably best avoided and both Prologis and Rexford deserve a deep dive.What happened to Medical Properties Trust's dividend?Medical Properties ...