function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Animalesto, Gloria & Dewi, Kartika & Apriyanti, Yuni', 5],
    ['Arai, Hisao P. & Smith, John W.', 6],
    ['Dewi, Kartika & Palm, Harry W.', 6],
    ['Gonzalez-Solis, David & Soler-Jimenez, Lilia C.', 1],
    ['Lopes, Daniela A. & Gomes, Delir Correa & Knoff, Marcelo', 1],
    ['Moravec, František & Barton, Diane P.', 3],
    ['Moravec, František & Chaabane, Amira & Justine, Jean-Lou', 1],
    ['Moravec, František & Justine, Jean-Lou', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);