function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bian, Xun & Liu, Jing & Yang, Zizhong', 2],
    ['Cadena-Castañeda, Oscar J.', 1],
    ['Du, Bao-Jie & Bian, Xun & Shi, Fu-Ming', 6],
    ['Du, Baojie & Bian, Xun & Shi, Fuming', 2],
    ['Hollier, John & Maehr, Michael, D.', 1],
    ['Ingrisch, Sigfrid', 13],
    ['Zhang, Qianwen & Pang, Siyu & Rong, Pinying & Bian, Xun', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);