Authors’ contributions
FMMcA, AAG, and ECOB designed the study. AAG and ECOB conducted the research and collected the data. JM collated the database. AAG, ECOB and FMMcA were involved in the statistical analysis of the data. AAG drafted the initial manuscript. AAG, ECOB, SC and FMMcA contributed to the manuscript preparation. All authors reviewed and approved the final version of the manuscript.