function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gueroun, Sonia Km & Schäfer, Susanne & Gizzi, Francesca', 1],
    ['OLIVEIRA, OTTO M. P. & MIRANDA, THAÍS P. & ARAUJO, ENILMA M.', 4],
    ['Oliveira, Otto M. P. & Feliú, Guillermo & Palma, Sergio', 1],
    ['Oliveira, Otto M. P. & Migotto, Alvaro E.', 2],
    ['Ruiz-Escobar, Fernando & Valadez-Vargas, Diana K.', 1],
    ['Shiganova, Tamara A. & Abyzova, Galina A.', 6],
    ['Verhaegen, Gerlien & Cimoli, Emiliano & Lindsay, Dhugal', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);