function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albornoz-Garzón, Juan G. & Conde-Saldaña, Cristhian C.', 1],
    ['Carlos David de Santana', 19],
    ['Carlos David de Santana & Javier A. Maldonado-Ocampo', 23],
    ['Fernández-Yépez, A.', 1],
    ['Ferraris, Carl J. & Jr & Santana, Carlos David de', 20],
    ['Kang, Ning & Hu, Hongying & Guo, Shuhan & Luo, Shungang', 2],
    ['Maldonado-Ocampo, Javier A. & Santana, Carlos David de', 1],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 5],
    ['Santana, Carlos David De & Maldonado-Ocampo, Javier A.', 1],
    ['Santana, Carlos David De & Vari, Richard P.', 5],
    ['de Santana, Carlos David & Castillo, Otto & Taphorn, Donald', 1],
    ['de Santana, Carlos David & Maldonado-Ocampo, Javier A.', 1],
    ['de Santana, Carlos David & Vari, Richard P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    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);