function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albornoz-Garzón, Juan G. & Conde-Saldaña, Cristhian C.', 1],
    ['Ceríaco, Luis M. P. & Santos, Bruna S. & Semedo, Thiago B. F.', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 1],
    ['Cope, Edward Drinker', 3],
    ['Gosse, J. - P.', 3],
    ['Heckel, J. J.', 5],
    ['Hensel, R. F.', 4],
    ['Hernan López-Fernández & Donald C. Taphorn', 6],
    ['Koerber, Stefan & Litz, Thomas O. & Mirande, Juan Marcos', 2],
    ['Kullander, Sven O. & Nijssen, H.', 2],
    ['Kullander, Sven O. & Royero, R. & Taphorn B., Donald C.', 2],
    ['Litz, Thomas O. & The, Stefan Koerber Introduction', 4],
    ['López-Fernández, Hernán & Taphorn, Donald C.', 4],
    ['Mattos, Jose L. O. & Costa, Wilson J. E. M.', 3],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 3],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);