function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Burtt, Bernard Dearman & Davidson, Anstruther', 2],
    ['Burtt, Bernard Dearman & Woods, Joseph', 3],
    ['Diels, Friedrich Ludwig Emil', 1],
    ['Kanehira, Ryozo & Hatusima, Sumihiko', 1],
    ['Mendum, M.', 1],
    ['Naive, Mark Arcebal K.', 1],
    ['Olimpos, Shiella Mae B. & Mansibang, Jayson A.', 1],
    ['Qin, Jia-Qi & Li, Rui-Feng & Pang, Yan-Ping & Wen, Fang', 1],
    ['Ridley, Henry Nicholas', 3],
    ['Royen, Pieter van', 1],
    ['Schlechter, Fridrich Richard Rudolf', 19],
    ['Singh, Rajeev Kumar & Arigela, Ravi Kiran', 1],
    ['Woods, Joseph', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);