function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barahona-Segovia, Rodrigo M. & Puiggros, Andrés', 3],
    ['Barclay, Maxwell V. L. & Sw, London', 5],
    ['Batelka, Jan', 49],
    ['Batelka, Jan & Engel, Michael S. & Falin, Zachary H.', 2],
    ['Batelka, Jan & Hoehn, Patrick', 3],
    ['Batelka, Jan & Hájek, Jiří', 12],
    ['Batelka, Jan & Prokop, Jakub', 4],
    ['Dejean, Pierre François Marie Auguste', 2],
    ['Engel, Michael S. & Falin, Zachary H. & Batelka, Jan', 7],
    ['Falin, Zachary H.', 4],
    ['Falin, Zachary H. & Engel, Michael S.', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 7],
    ['Iskandarova, Tukazban & Japarashvili, Shota', 3],
    ['Peck, Stewart B.', 3],
    ['Pérez-Hernández, Cisteil Xinum', 3],
    ['Other (16)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=128)',
    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);