function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angus, Robert B & Sadílek, David & Shaarawi, Fatma', 1],
    ['Fall, H. C.', 1],
    ['Gonzalez-Rodriguez, Liza M. & García-Hernández, Andrea L.', 2],
    ['Luna-Luna, Alba Magali & Martins, Caleb Califre', 2],
    ['Majka, Christopher', 2],
    ['Motschulsky, Victor de', 1],
    ['Pérez-Hernández, Cisteil Xinum', 1],
    ['Rogers, D. Christopher & Cruz-Rivera, Edwin', 1],
    ['Short, Andrew E. Z. & Fikáček, Martin', 2],
    ['Solier, Antoine Joseph Jean', 1],
    ['Spangler, Paul J. & Short, Andrew Edward Z.', 3],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 6],
    ['Torres, Patricia L. M. & Michat, Mariano C.', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);