function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrio-Amorós, César L. & Brewer-Carías, Charles', 1],
    ['Camper, Jeffrey D. & Torres-Carvajal, Omar & Ron, Santiago R.', 1],
    ['FAIVOVICH, JULIÁN & HADDAD, CÉLIO F. B. & GARCIA, PAULO C. A.', 1],
    ['Fouquet, Antoine & Vidal, Nicolas & Dewynter, Maël', 3],
    ['Jungfer, Karl-Heinz', 5],
    ['Jungfer, Karl-Heinz & Verdade, Vanessa K. & Faivovich, Julián', 11],
    ['Llanqui, Irbin B. & Y. Salas, Cinthya & Oblitas, Melissa P.', 1],
    ['Moravec, Ji Ř Í & Aparicio, James & Guerrero-Reinhard, Marcelo', 1],
    ['Ron, Santiago R. & Toral, Eduardo & Venegas, Pablo J.', 1],
    ['Ron, Santiago R. & Venegas, Pablo J. & Toral, Eduardo', 3],
    ['Schiesari, Luis & Rossa-Feres, Denise De Cerqueira', 4],
    ['Venegas, Pablo J. & Garcia-Ayachi, Luis A. & Toral, Eduardo', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);