function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Duan, Yani & Webb, M. D. & Zhang, Yalin', 16],
    ['Duan, Yani & Zhang, Yating & Dietrich, Christopher H.', 17],
    ['Gnezdilov, Vladimir M.', 1],
    ['Khatri, Imran & Webb, Michael D.', 3],
    ['Kirkaldy, George Willis', 1],
    ['Naveed, Hassan & Shah, Bismillah & Sohail, Kamran & Zhang, Yalin', 5],
    ['Shah, Bismillah & Khan, Waqar & Naveed, Hassan', 4],
    ['Shah, Bismillah & Naveed, Hassan & Duan, Yani', 22],
    ['Webb, Michael D. & Viraktamath, Chandra A.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);