function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kogure, Kenji & Ohara, Naomichi', 1],
    ['Mes, M.', 1],
    ['Qu, Ling & Webb, M. D. & Dai, Ren-Huai', 6],
    ['Webb, Michael Donald', 3],
    ['Xu, Deliang & Zhang, Yalin', 13],
    ['Yu, Zhou & Webb, Mick & Dai, Ren-huai & Yang, Mao-fa', 2],
    ['Zahniser, James N. & Dietrich, Chris H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);