function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cambefort, Yves & Bordat, Patrice', 24],
    ['Dellacasa, Marco & Dellacasa, Giovanni', 12],
    ['Dellacasa, Marco & Dellacasa, Giovanni & Gordon, Robert D.', 121],
    ['Dellacasa, Marco & Dellacasa, Giovanni & Skelley, Paul E.', 21],
    ['Dellacasa, Marco & Gordon, Robert D. & Dellacasa, Giovanni', 13],
    ['Freese, Edwin L. & Veal, Doug A. & Lago, Paul K.', 53],
    ['Gordon, Robert D. & Bordat, Patrice & Dellacasa, Giovanni', 48],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 110],
    ['Král, David & Šípek, Petr', 29],
    ['Minor, Pablo', 228],
    ['Pérez-Hernández, Cisteil Xinum', 20],
    ['Skelley, Paul E.', 23],
    ['Skelley, Paul E. & Dellacasa, Marco & Dellacasa, Giovanni', 55],
    ['Stebnicka, Z. Teresa & Skelley, Paul E.', 24],
    ['Ziani, Stefano & Bezděk, Aleš & Branco, Tristão', 20],
    ['Other (71)', 228]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1029)',
    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);