function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Diago-Toro, María F. & García-Cobos, Daniela', 3],
    ['Doan, Tiffany M.', 2],
    ['Doan, Tiffany M. & Lamar, William W.', 1],
    ['Echevarria, Lourdes Y. & Barboza, Andy C. & Venegas, Pablo J.', 1],
    ['Llanqui, Irbin B. & Y. Salas, Cinthya & Oblitas, Melissa P.', 1],
    ['Restrepo, Adriana & Molina-Zuluaga, Claudia & Hurtado, Juan P.', 1],
    ['Ribeiro-Júnior, Marco A. & Amaral, Silvana', 11],
    ['Uchoa, Lucas Rafael & Delfim, Fagner Ribeiro', 1],
    ['Wagler, Johann Georg', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);