Letters to the editor (multiple letters)

Marc Ladanyi, James M. Woodruff, Bernd W. Scheithauer, Julia A. Bridge, Frederic G. Barr, John R. Goldblum, Cyril Fisher, Antonio Perez-Atayde, Paola Dal Cin, Christopher D.M. Fletcher, Jonathan A. Fletcher, Maureen J. O'Sullivan, Mark R. Wick, Michael Kyriakos, Xiaopei Zhu, Paul E. Swanson, Louis P. Dehner, Peter A. Humphrey, John D. Pfeifer