Sincere thanks are due to the cooperating institutions for their collaboration in contributing to the database. Special thanks are due to R. N. Roy and W. Burgos León for initiation, guidance and inputs provided for the preparation of this database. Assistance given by L. Fletcher-Paul and G. Bizimungu is duly acknowledged. Thanks are due to S. Jasperse and W. Prante for designing the database and developing the web application.

The contributions of C. Vella Tomlin Nicodeme, M. Matranga and I. Verbeke in data inputting are deeply acknowledged.