function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baba, Kikutaro', 1],
    ['Burn, Robert F.', 1],
    ['Chaban, E. M. & Chernyshev, A. V.', 2],
    ['Chaban, Elena M. & Ekimova, Irina A. & Schepetov, Dimitry M.', 4],
    ['Delgado, Marlon & Freire, Fúlvio Aurélio de Morais', 3],
    ['Eliot, C. N. E.', 1],
    ['Eschscholtz, Johann Friedrich von', 1],
    ['Gosliner, Terrence', 9],
    ['Gutiérrez, Manuel Caballer & Ortea, Jesús & Rivero, Nelsy', 1],
    ['Mehrotra, Rahul & A. Caballer Gutierrez, Manuel & M. Scott, Chad', 9],
    ['Pease, W. H.', 2],
    ['Rudman, William B.', 3],
    ['Valdés, Ángel', 4],
    ['Yonow, Nathalie', 6],
    ['Zhang, Shuqian & Liao, Meijie & Wang, Yingeng & Kong, Miao', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);