function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahyong, Shane T.', 2],
    ['Cleva, Régis & Guinot, Danièle & Albenga, Laurent', 2],
    ['Guinot, Danièle & Quenette, Gwenaël', 1],
    ['Milne Edwards, Alph.', 1],
    ['Naruse, Tohru & Ng, Peter K. L.', 1],
    ['Ng, Peter K. L. & Mclay, Colin L.', 2],
    ['Ng, Peter K. L. & Yang, Chien-Hui', 7],
    ['Published, First', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);