function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cruz-Rodríguez, Cristian & Lynch, John D. & Cárdenas, Julieth S.', 1],
    ['Köhler, Gunther & Lehr, Edgar', 2],
    ['Ribeiro-Júnior, Marco A.', 4],
    ['Uchoa, Lucas Rafael & Delfim, Fagner Ribeiro', 1],
    ['Venegas, Pablo J. & Duran, Vilma & Garcia-Burneo, Karla', 1],
    ['Venegas, Pablo J. & Echevarria, Lourdes Y. & Alvarez, Silvana C.', 1],
    ['Venegas, Pablo J. & Echevarría, Lourdes Y.', 3],
    ['Venegas, Pablo J. & Garcia-Ayachi, Luis A.', 5],
    ['Venegas, Pablo J. & García-Ayachi, Luis A.', 4]
  ]);
  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);