function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Guinot, Danièle & Ng, Ngan Kee & Rodríguez Moreno, Paula A.', 1],
    ['Hartnoll, Richard G. & Clark, Paul F.', 1],
    ['Leach, William Elford', 1],
    ['Low, Martyn E. Y. & Ng, Peter K. L. & Evenhuis, Neal L.', 1],
    ['Ng, Ngan Kee & Rodríguez Moreno, Paula A. & Naruse, Tohru', 4],
    ['Parasram, Nadeshinie & Santana, William & Vallès, Henri', 2],
    ['Perger, Robert & Wall, Adam', 2],
    ['Rogers, D. Christopher & Cruz-Rivera, Edwin', 1],
    ['Toledano-Carrasco, Ia Atzimba & Villalobos, José Luis', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);