function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dauphin, Gregorio & Gradstein, S. Robbert & Allen, Noris Salazar', 4],
    ['Gomes do Nascimento, Géssica Maria', 1],
    ['Gradstein, S. Robbert', 2],
    ['Renner, Matt A. M.', 1],
    ['Sarimi, Muhammad Syafiq & Pócs, Tamás & Lee, Gaik Ee', 2],
    ['Schäfer-Verwimp, A.', 4],
    ['Silva, Jainara Pereira & Oliveira-da-Silva, Fúvio Rubens', 1],
    ['Söderström, Lars & Hagborg, Anders & Konrat, Matt Von', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);