function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Capellari, Renato Soares', 2],
    ['Dawah, Hassan A. & Ahmad, Syed Kamran & Abdullah, Mohammed A.', 1],
    ['Grichanov, I. Ya. & Selivanova, O. O.', 1],
    ['Grichanov, Igor Ya.', 8],
    ['Kasagi, Michio', 1],
    ['Li, Xuankun & Li, Zhu & Yang, Ding', 8],
    ['Parent, Octave', 4],
    ['Runyon, Justin B.', 4],
    ['Sinclair, Bradley J.', 1],
    ['Tang, Chufei & Zhu, Yajun & Yang, Ding', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    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);