function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Castro, Peter', 1],
    ['Devi, S. Suvarna & Mendoza, Jose C. E. & Ravinesh, R.', 1],
    ['Guinot, Danièle & Quenette, Gwenaël', 1],
    ['Mclay, Colin L.', 9],
    ['Mclay, Colin L. & Hosie, Andrew M.', 5],
    ['Mclay, Colin L. & Ng, Peter K. L.', 4],
    ['Naderloo, Reza & Türkay, Michael', 1],
    ['Stimpson, William', 1],
    ['Takeda, Masatsune & Kurata, Yôji', 1],
    ['de Man, Johannes Govertus', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);