function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashby, S. F.', 1],
    ['David, B. Vasantharaj & Manjunatha, And M.', 1],
    ['Dubey, Anil Kumar & Ko, Chiun-Cheng', 2],
    ['Gillespie, Peter S.', 25],
    ['Kanmiya, Kenkichi & Ueda, Shigenori & Kasai, Atsushi', 2],
    ['Lee, Suhyeon & Suh, Soo-Jung', 3],
    ['Manzari, Shahab & Quicke, Donald L. J.', 1],
    ['Martin, Jon H.', 2],
    ['Martin, Jon H. & Mound, Laurence A.', 1],
    ['Mayne, R. & Ghesquière, J.', 1],
    ['Quaintance, A. L. & Baker, A. C.', 1],
    ['Suh, Soo-Jung & Ji, Jungyoun', 2],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    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);