function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Eaton, Alfred Edwin', 1],
    ['Huang, Dong-Dong & Shen, Chen-Yang & Huang, Gui-Ying', 2],
    ['Martynov, Alexander V.', 1],
    ['Muthukatturaja, M. & Balasubramanian, C. & Rathinakumar, T.', 2],
    ['Qiang, Xin-He & Zhou, Chang-Fa', 7],
    ['Vasanth, M. & Selvakumar, C. & Subramanian, K. A. & Babu, R.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);