function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Champion, George Charles', 10],
    ['Delocado, Emmanuel D. & Freitag, Hendrik', 3],
    ['Hernando, Carles', 5],
    ['Hernando, Carles & Ribera, Ignacio', 23],
    ['Hernando, Carles & Ribera, Ignacio & Csic', 5],
    ['Liu, Zhen-Hua & Jia, Feng-Long', 3],
    ['Matsumoto, Keita', 10],
    ['Peck, Stewart B.', 3],
    ['Pic, Maurice', 10],
    ['Pérez-Hernández, Cisteil Xinum', 22],
    ['Pütz, Andreas', 6],
    ['Satô, Masataka Dr.', 5],
    ['Sharp, David', 5],
    ['Spilman, T. J.', 4],
    ['Yoshitomi, Hiroyuki', 33],
    ['Other (21)', 30]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=177)',
    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);