function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cresson, E. T.', 1],
    ['Cuéllar-Ramírez, Mauricio & Ramos-Pastrana, Yardany', 23],
    ['Fernandes, Daniell R. R. & Pádua, Diego G. & Mazariegos, Luis A.', 7],
    ['Fernández-Triana, José L. & Ravelo, Horacio Grillo', 10],
    ['González-Moreno, Alejandra & Bordera, Santiago', 5],
    ['Moreno, Alejandra González - & Bordera, Santiago', 7],
    ['Onody, Helena Carolina & Brandão, Carlos Roberto Ferreira', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);