function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Basu, A. K. & Basu, M. & Adesiyun, A. A.', 2],
    ['Guzmán-Cornejo, Carmen & Herrera-Mares, Angel', 7],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 1],
    ['Petney, Trevor N. & Boulanger, Nathalie & Saijuntha, Weerachai', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);