function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Butler, Arthur Gardiner', 1],
    ['Dmitriev, Dmitry A.', 1],
    ['Wang, Bo & Zhang, Haichun & Fang, Yan', 7],
    ['Wang, Bo & Zhang, Haichun & Fang, Yan & Duan, Ye', 1],
    ['Wang, Bo & Zhang, Haichun & Jarzembowski, Edmund A.', 1],
    ['Wang, Ying & Ren, Dong', 2],
    ['Wang, Ying & Wang, Lin & Ren, Dong', 3],
    ['Ying, Wang & Dong, Ren', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);