function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dubey, Anil Kumar', 2],
    ['Dumbleton, Lionel Jack', 1],
    ['Gavrilov-Zimin, I. A. & Borisov, B. A.', 1],
    ['Hajizadeh, Jalil', 1],
    ['Lee, Suhyeon & Suh, Soo-Jung', 7],
    ['Manzari, Shahab & Quicke, Donald L. J.', 3],
    ['Martin, Jon H. & Mound, Laurence A.', 1],
    ['Suh, Soo-Jung & Ji, Jungyoun', 1],
    ['Wang, Ji-Rui & Du, Yu-Zhou', 8],
    ['Wang, Ji-Rui & Xu, Zhi-Hong & Zhou, Guo-Xin', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);