function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ackermann, Markus & Weigend, Maximilian', 1],
    ['Henning, T. & Weigend, M.', 2],
    ['Henning, Tilo & Acuna Castillo, Rafael', 1],
    ['Henning, Tilo & Acuna-Castillo, Rafael & Cornejo, Xavier', 7],
    ['Jarvis, Charlie', 3],
    ['Linnaeus, Carolus', 2],
    ['Macfarlan, Donald Alexander Bankier', 1],
    ['Martin, Claudia M. & Zanotti, Christian A.', 3],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 1],
    ['Silveira, Fernando A.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);